Houtarou is a high school student in search of his own "Gotcha" (something unique to him). However, he is still in a daze, unable to even decide on a career path. His classmate Rinne looks down on him.

After transforming into Kamen Rider Gotchard, Houtarou wants to learn more about the Chemmies and is advised by his teacher Minato to take the entrance exam for the secret Alchemy Academy. However, Houtarou runs into a problem. Meanwhile, Ryo Kajiki meets a talking skateboard who loves to play with children, but...

Houtarou continues his quest to befriend all the Chemies as he meets a Chemy known as Apparebushido, and is given his card by Minato. A new Malgam appears and Houtarou attempts to fight it using Apparebushido, but it defies orders and causes Houtarou to be defeated. "Just how can I get Apparebushido to open up to me?" Houtarou asks himself as he begins to secretly train. Just then, he is approached by alchemist named Spanner Kurogane, who demands the Gotchardriver!

Houtarou can't help but exclaim in admiration at Valvarad's powerful might. However, Spanner says that he didn't acknowledge Houtarou as a Kamen Rider and leaves. Houtarou and Rinne, who continue their search for Chemies, come face to face with the Three Dark Sisters, Atropos, Clotho and Lachesis. Lachesis then absorbs a Chemy and transforms into Malgam. Houtarou transforms into Gotchard, but immediately after that, they are sent to a huge, different space!

Seeking the teachings of Renge and Sabimaru who have sealed away a lot of Chemies, Houtarou and Rinne go to a certain professional wrestling Dojo with Renge and the others. When Houtarou immediately tries to find a Chemy, he's attacked by gang-like men who are after the Dojo's land. However, Alchemy can't be used against ordinary people. In front of a confused Rinne and the others, Houtarou borrowed Renge cards and transformed into Gotchard! However this time, a powerful Malgam suddenly appears!

It's early in the morning for the super A-class alchemist, Black Steel Spanner. His true condition is shrouded in mystery as he works hard every day on Chemie Capture missions to protect world order and peace among people. Meanwhile, Boruto Chizaki, a man who was once defeated by Spanner, appears. "I won't let you say you've forgotten me...black steel spanner!" Boruto's twisted emotions. On the other hand, it is Valvarado who tightens the screws! ? In order to rescue the captured Kemmy and Rinne, use the steel, black steel spanner!

"I'd like you to adopt this guy." Riku Sunayama, an elite elementary school student, comes to Houtarou and his friends who are working hard to collect Chemie as usual. He plans to report the Chemie he found, "Sabony Dollar." Does a duck come carrying green onions? The boy brings a cactus! Everyone at Alchemy Academy would be happy if they could obtain Chemie. But, Riku-kun, can you really let go of Sabonidol...? Rescue the boy's hidden feelings now, Gatchard!

Sabosuke is gone! ? While Houtarou transforms into Needle Hawk and fights Dragonfly Malgam, the Sabony Dollar gets stuck in the driver. Where on earth did it go? And who is Margam who is targeting them? The answer to that mystery seems to lie with the boy... Meanwhile, Atropos comes into contact with Rinne. What is its purpose? ─Grab it! The best Gotcha! ─ Look forward to next week!

The long-awaited Furasu High School school trip! Houtarou and his friends come to Kyoto. According to Kajiki, UFOs have recently been sighted in Kyoto, so the theme of the school trip is to search for UFOs. Meanwhile, Kajiki meets the woman of his destiny! ? Meanwhile, there are reports of sightings of Kuroto in Kyoto as well. What exactly is her purpose? However, Houtarou leaves Kemmy and the others at home. I can't become Kamen Rider! ! ! What should Houtarou do? ? And what will happen to Kajiki's love...?

Hijiri, whom Kajiki is in love with, has a boyfriend! Kajiki is depressed, but it becomes possible that the man is one of the suspects who escaped from the convoy that was attacked by Kuroto. If that's the case, that man might also transform into Margam. Saint who is with me is in danger! Houtarou and Minato start searching for the man...! ?

Kuroto captures a new Chemie, UFO X, in Kyoto. It seems that it has something to do with the mysterious driver that the Three Dark Sisters are plotting... Meanwhile, Houtarou and his friends continue to work hard to recover Chemie. Their next target for recovery is UFO X! In fact, UFO X is something that Sabimaru has admired for many years. Houtarou's heart swells with anticipation and excitement. Two investigators dispatched from the Alchemy Federation, Kugimiya and Harima, arrive there. Houtarou is declared by Kugimiya that he will not be recognized as a Kamen Rider. They are forced to hand over the driver, but... Meanwhile, three dark sisters appear at Furasu High School! What is the purpose of the three sisters? And will Houtarou be able to show his strength as a Kamen Rider?

The spy was a messenger from the Alchemy Union, Investigator Shiori Harima! Anger boils inside Houtarou as she treats Kemmie like trash. However, the three dark sisters appear and the members of Alchemy Academy are in the biggest crisis! A fragment of Malgam, a mass of human malice. System information of “Gatcha Driver” and the powerful power of “Level Number 10”! The actors are ready. Holding the completed "Dreaddriver" in hand, Atropos smiles fearlessly. He sets his sights on the only young experimental subject. "From now on, your handwriting will be Destroyer of Darkness."

Sabimaru-senpai has gone. Houtarou regrets his immaturity. Weak, fleeting, and endless suffering. The harsh reality of battle stands in front of the young alchemist. nevertheless. --Still! I don't want those fun times to be in the past! The key to saving Sabimaru is where his thoughts go. My dream Chemie, “UFOX”! Gather your friends and call the UFO. Wear the power of level number 10 and change now! Super Gatchard! Run instead of worrying! Ichinose Houtarou!

Kemmy can eat people! ? A new level number 10 appears in front of Houtarou and his friends who have successfully become friends with UFOX. Its name is “XX-Rex”! However, the X-Rex has a surprising habit of eating humans. Leaving it unattended is dangerous. Houtarou runs into Gotcha, but wonders why he would do such a thing. Meanwhile, there is another shadow chasing X-Rex. They are occult writer Manabe and his daughter, Sawa. Rinne begins to identify with Sou, who is thinking about her father. But then, the evil hand of the Three Dark Sisters approaches again...! The strongest dinosaur level 10, what is its true meaning? ?

Why do X-Rex eat people? The reason is curiosity about people. Because of their ability to see into the memories of the people they ate, they satisfied their curiosity by eating the people they were interested in. Houtarou, who was able to realize the true meaning, got X-Rex as well! Use the Super Gatchard Cross X-Rex to rush to Rinne and the Mabe family who are being attacked by the Three Dark Sisters! However, Gatchard defends himself against the onslaught of the three sisters. Atropos tries again to torture Rinne, who cannot use alchemy. Meanwhile, the Mabe family is also under the influence of evil...! It's bad if it stays like this! ! At that moment, everyone's voices reached Houtarou's ears. Turn everyone's thoughts into power, protect everyone, and Gatchard! Finally, it's time for Rinne to fight back...! ?

Be careful at Christmas! UFO-X, X-Rex... and Houtarou and his friends, who joined forces with Kamen Rider Geetz and others, made six new Level 10s at once. While everyone was in high spirits, the black steel spanner was also moving. Kyoka Edami. With her appearance as Spanner's guide, the story begins a new phase. And disaster awakens. The mythical monster "Yamata no Orochi" A monster resembling that giant snake fills the sky, and a darkness greater than the three sisters stands in front of Houtarou and his friends. The name of this disaster is "Grion". Kamen Rider Gatchard's biggest crisis is now upon us! !

The new year is over and the new year is here. While Houtarou was serving New Year's food in the kitchen, he was thinking about the orange gatchado that suddenly appeared at Christmas. Who the hell is he...? On the other hand, behind the scenes of Glion's revival, a person is showing signs of movement... With the appearance of Malgam and other things, the atmosphere gradually becomes uneasy, and a surprising development awaits Houtarou and his friends.

Alchemy Academy and Houtarou and his friends have lost the important figure of Minato. Houtarou loses his path and is at a loss. Renge tries to give up on becoming an alchemist. And Sabimaru can't stop it. While each of them is in conflict, Moon Margam's evil hand is once again... However, with Houtarou's current strength, Margam cannot be defeated. Receiving the teachings of the orange Gatchard who reappeared, Houtarou decides to find a way to defeat Malgam with his own power, and is time-leap into the past! ? A secret was hidden behind the time leap. Will Houtarou be able to defeat Malgam and get back on his path? ?

The Kitchen Ichinose Alliance is formed, and Houtarou and his friends are in high spirits. However, Rinne is the only one who cannot survive the excitement. Is her current behavior really the right thing to do for someone who should have cherished the "rules"? As she worries about this, Minato appears before her. "Kudou, please come back to the academy." As an alchemist, that must be the right thing to do, right? Rinne is shaken by a question from her former "teacher." What is right for me? Meanwhile, Atropos, accompanied by the ferocious Malgam, suddenly attacks. He thrusts that blade at the troubled Rinne! "Rinne-chan, will you die today?" What does the girl see in that little devil? Now, the power sleeping inside Rinne is awakened! Transform! Kamen Rider Majed! !

The black steel spanner was impatient. Ichinose was only an amateur. Kudo was supposed to be protected. Both of them obtained powers stronger than themselves as "Kamen Riders." More power... More strength! ! Just as Spanner looks like that, her parents, who were supposed to be on a long journey, suddenly appear. Spanner smiles as he reunites with his parents. Maybe there is a place I should protect, a place I should return to. However, that was a pale dream given to me by an angel. The most vile and cruel trap for a spanner. When the messenger of darkness, the angel of darkness, laughs, the wrench of a spanner echoes in vain.

The black steel spanner was engulfed by its own "black flame" and was tragically turned into Malgam. In the past, he saw his parents murdered with his own eyes. Despair and hatred bring their parents back to life and have them killed again and again in front of their eyes. Anger towards his master who hid his past and locked away his power for 10 years. Helpless, Houtarou and his friends help Kyoka create a screwdriver and think about their only hope of saving Spanner. Spanner vows to take revenge on Glion even if he becomes Malgam. What appeared in front of him was his former senior wearing a dread mask. Who will control their power and win the battle? And what is the outcome of the spanner that is eaten away by black flames...

One day in the kitchen. The appearance of a lotus flower creates a mesmerizing and strange atmosphere. It seems that they are in love, so Houtarou and his friends decide to follow him in order to find him. Furthermore, in a certain town. There is a mysterious man with good looks who exudes charm. Its appearance is... the Zukyunpire of occult chemistry...! ? He seems to be planning something with a large group of people. What exactly is that purpose? Meanwhile, Kuroto, who has a strong fighting spirit, is given a certain power by Glion. She also seems to have something planned... Find out the fate of Renge's love, Kuroto's plan, and the mystery of Zukyunpire!

If this continues, Full Power Zukkyun will accumulate! ! ! ! Houtarou and his friends try to stop the invasion of Full Power Zukkyun due to the power of Chemie, who fascinates people, and Zukkyun Pier. Why is Zukyunpire, who is supposed to be Chemie, causing people pain! ? When the truth about the Zukyun Pier is revealed, the world is now covered by the biggest Zukyun in history! ! Vampire is the prince of the moonlit night. Now is the time to fight back with the power of the moon! Activate! Majed Moon Cerberus!

The Kitchen Ichinose Union was having a peaceful time when a bolt of heaven hit! ! Surprisingly, all the data that Sabimaru had archived so far has disappeared! This must be the work of the eraser Kemie "Keszo" who was supposed to have gotten it. Let's all find Kesuzo hidden in the clouds! ! ...That's it! ? Not only the data but also all the cards disappeared! ? And Houtarou's ring has changed too! ? In the end, even the steam liner has changed in appearance! ? ! ? What happened? Forbidden power, Dread Ishiki, ancient Malgam! Everything is about to take a sudden turn! ! Don't miss the exciting developments! !

However, the effects on Houtarou's body are immeasurable, and Rinne and her friends are worried about Houtarou's health. What appeared in the midst of all this was Fuga Kudou. Kemie and the others are still taken by Fuga and Glion.

Despite the sadness of losing Hopper 1, Houtarou acts bravely, saying, "I want to do what I can." Glion enters the final stage to open the door of darkness. The strongest level number 10, the founder of Chemie, launches Dragonaross. His power is amazing, and Houtarou and his friends are in a pinch. Then a gust of wind blows... and a Kamen Rider appears.

Finally the decisive battle! Ouroboros world! The pieces needed to open the door of darkness... are the Dread Drivers that create the "Kiln", all the "Level Number 10", and the numerous Chemies who are the raw materials. And the "key" Houtarou was entrusted with was the Gotcher Driver. With two of the three in his hands, Glion finally sets his sights on Houtarou's Gatcha Driver. Meanwhile, Houtarou and his friends enter the Ouroboros World, Glion's ritual site, to retrieve their captured friends. Two intentions collide, and the biggest decisive battle begins now! Believe in your friends and grab the brightness of platinum!

Houtarou and Minato were able to overcome various obstacles and return to Alchemy Academy. Everyone savors the joy of returning home. On the other hand, Renge is returning to her maternal home in Kutsu Village. There, her beloved grandmother Tamiko is happy to be reunited with Renge after a long time. However, it wasn't just her beloved grandmother who was waiting for Renge...! ? A mysterious exorcist and "Pandora Kajiki" also appear in the Yokai commotion! ? What will happen to Renge who is freaking out? ?

This Town Is Weeping The culprit is inside! ! Margam, who attacked the village, was a land grabber who was trying to unfairly buy the village and destroy it. However, the case is not over yet, and the landowner is discovered in a strange appearance! ! What is really happening in this village... A brilliant detective sets out to solve the Kutsumura incident. The village is crying. When you understand the truth, the courage of the lotus flower will blossom now!

"Long time no see! Houtarou!!" Spring has come to Houtarou! ? In the new school year, Houtarou is promoted to third year, and his childhood friend and beautiful girl, Shizuna Kujuku, transfers in! It seems that Shizuna has extraordinary feelings for Houtarou...? Meanwhile, his classmate Mikuriya is in crisis due to his recruitment to the new club. It seems that the drama club will be disbanded if it doesn't recruit five new students. Houtarou and his friends hear this and offer to help Mikuriya! The performance was... "Romeo and Juliet." Where will Houtarou, Shizuna, and Rinne go in spring? Spring of encounter. A farewell spring? Aoharu rider is extremely rare here! ! ! !

"Because I met you, I don't regret dying anymore." "That's no good. If you love me, live. Be with me." Guided by the moon, Romeo reunites with Juliet. Romeo made a pact with the moon and vowed eternity with Juliet. However, the moon is a fickle thing. Romeo and Juliet. The "fate" that tore them apart. What is the fate of Houtarou and Rinne? The feud with Shizuna, the success of the stage performance, and my feelings. When Rinne Kudo's brilliance fades. Overcome the darkness and create light again! The sparkle is now on the stage.

Kuroto seeks more power to regain what he lost. While wandering, Houtarou is attacked again...but then, the Hundred army suddenly appears and joins the battle. Battalion commander Alpha attacks in search of a "mysterious super weapon." However, due to someone's power, Kuroto, Houtarou, and the Hundreds are sent into a labyrinth in another dimension. Are yesterday's enemies today's friends? What actions will Houtarou and Kuroto take in front of Kasseen and the others who attack? And will the two be able to escape from the mysterious labyrinth?

Houtarou and his friends repel the Alpha Battalion Commander, but the threat of the Hundred is coming. Three assassins appeared. Using the Legend Rider's power, he gets Houtarou and the others into trouble. Then a ray of light descends... That beautiful person finally arrives! ? It's the beautiful moment you've been waiting for! ! !

Gorgeous man “Otori Sakura Kaguya Quartz” has returned to Gatchard! ! ! Kaguya is curious about the state of the other world. Houtarou and his friends freely throw their gorgeous clothes around and get swayed around a lot. Meanwhile, the Hundred Three, who were supposed to have been expelled, begin to move. The Hundred's upper management, who have lost their pawns, also begin to move to bring a new crisis to the world. This is not the time to be showing off your gorgeousness! ! Meanwhile, what unexpected action did Kaguya take? ?

Houtarou and his friends successfully fought together and repulsed Saigetsu. However, Kaguya now starts attacking Houtarou. It's too much for a fight! What is the reason...? Meanwhile, Hundred is also preparing for a final attack. The "Doomsday Clock" has begun to tick... What actions will Houtarou and Kaguya take in the face of its immeasurable power?

Dark Lord Gigist finally moves! Gigisuto finds a mysterious egg inside Houtarou. In order to get his hands on the "egg" he was looking for, Gigist begins an invasion of Houtarou and his friends! ! And the shocking truth is revealed: What is the [original form] of Kemmy and his friends! ? This is just the beginning of the worst scenario drawn by the Dark King.

Houtarou loses Skateboards by defeating Skateboards Malgam, and is saddened by it. In addition, Antrooper Malgam appears in the city, and Rinne takes care of the depressed Houtarou and fights him, but if she defeats him, Antrooper will suffer the same fate...! ? Renka and Sabimaru also join in supporting Rinne. Meanwhile, Hopper 1 remembers the fairy tale of "The Golden Flower" when he sees Houtarou sinking. Get the golden flower to bring Houtarou's smile back! Now, Hopper 1's greatest adventure begins...

Houtarou, in despair after losing Hopper 1, disappears and is covered in eggs... And then the rain begins to fall. What exactly is happening inside the egg? Rinne despairs that Houtarou will never come back. In the rain that keeps falling, my friends continue to wait, even though they are worn out. When the rain stops and the rainbow appears, he will surely come back stronger! ! Now it's time to counterattack! ! !

Finally got Chemie full! ? Illusionary Rainbow Chemie Gotcha "Nijigon" too, until 101 pieces are completed, only 2 Chemies left! Aiming to get the two bodies, "Ozirakanth" and "Pakraptor", each of them carries out their own unique strategy. However, the Dark King can't just watch this happen... He seriously attacks the threat called Nijigon! ? When 101 chemies are aligned, Rainbow Gatchard's true power will be unleashed!

The Dark Lord was not alone! ! The last king comes from the Ouroboros ring. Their names are Germain and Gaeliya! In response to Gigist, who is in the process of rebirth and says, "We are originally a trinity," the Dark King is alone, and the transcendent Germain is eloquently furious. "Because I love humans...!" "First of all, for the sake of human happiness, let's go eliminate the most nuisance flies." Kudou Fuga is targeted! Three times as great Dark Lords with the "third eye"! The Kamen Riders stand up against the evil that has become invincible!

As the Dark Lord German continues his fierce attack, Nijigon suddenly disappears. Houtarou and his friends desperately search for their whereabouts. Based on the clues, they arrived at the destination... Where on earth did Nijigon disappear to? ? Meanwhile, Rinne makes a promise with Atropos. Spanner receives an invitation from Gigist. Each person's intentions begin to move, and the story reaches an unexpected ending...!

The 102nd Kemmy has appeared! ? Based on sightings of a mysterious creature, Houtarou and his friends head out to investigate. What was ahead was Sabimaru's older brother, Kagiichi, and the facility where Sabimaru was born and raised, Kongo Laboratory. They are guided by the director, Mami Kongo, but she is suspicious of the spanner as it smells strange. The 102nd Kemmy, is this also a trap of the revived Glion? A story surrounding a new mystery begins now!

The mysterious Malgam's true identity is Mami, the director of Kongo Laboratory. Mami is frightened by Glion's attack. What exactly happened between him and her? And then comes the time of collapse. Glion's true purpose is revealed and Sabimaru's dread is awakened. Will the sad sibling bond be able to overcome the past? ?

“As expected, this may be the limit...” The lid of Kajiki's memory is opened! ? For some reason, Kajiki has run into Kemie many times. Minato says that Kajiki's memory is becoming unstable due to repeated memory operations. On the other hand, Kajiki is suffering from love problems. Things don't seem to be going well with Hijiri-san, who I met in Kyoto, lately...? Will Chemie really be opened to society? And what will happen to Kajiki's love story? Run! Kajiki! !

Hijiri comes from Kyoto to Tokyo to meet Kajiki, but Yabuki, who used to be Jungle Margam, appears and is captured. The painful memories that had been taken away attack Hijiri... Meanwhile, Lachesis is planning to become human. She, too, was preparing to regain her stolen memories. Kajiki tries to save Hijiri again, but what stands in his way is Battery Malgam, the person she once transformed into. Don’t be afraid, Kajiki! Fight, Kajiki! Protect your memories with Saint and your fateful encounter!

People's memories have returned. Just when it seemed the turmoil surrounding Hijiri had died down, people's memories of Chemy that had been erased from their memory are restored. The existence of alchemists has become known to the world, and Houtarou and his friends are attacked one after another by those who seeking their power. What is the full extent of Gaeriya's plan? Meanwhile, Supana has seen this situation and has made up his mind.