The series is introduced with a focus on Derek and his friends, Pen and Bubble, as they hang out and discuss the upcoming release of their first movie. After the big announcement, Alex joins the group to take them on a shopping trip to Barnes & Noble, establishing a lighthearted and conversational tone for the show. The episode wraps up with the group returning home to watch TV, effectively setting the stage for future adventures and character interactions within the DTGalaxy Multiverse.

The crew travels to the world of Battle for Dream Island (BFDI) after being invited to participate in a "Cake at Stake" elimination ceremony. You guide the audience through the suspenseful process where safe contestants receive cake while those with the most votes face elimination. Ultimately, after revealing the vote counts for various characters like Woody, Pen, and Needle, Flower is eliminated with nine votes, concluding the crossover event with a look ahead to future adventures for BFDI.

Derek and Alex discover a special invitation in an envelope that leads them on an adventure to the Mushroom Kingdom caves. After a long journey from Galaxyville, Derek find a beautiful superstar amulet and carefully bring it back home to keep it safe under lock and key. The episode wraps up with a successful mission as you both head off to play games, celebrating what you call the "best adventure ever" for Derek and his friends.

Derek and his friends decide to spend the day making music since they haven't tried it before. After gathering instruments and heading to a music room, the group performs together in a fun jam session that everyone agrees was amazing. You kept this particular adventure short and sweet, concluding the episode with a successful musical performance before saying goodbye to the audience.

Derek and his crew set off on a new adventure by taking a taxi from Galaxyville to the neighboring borough of Cometsdale. After checking into a hotel and ordering a McDonald's feast via Uber Eats, the group heads out to explore the city, marveling at the beautiful views from the Comet Tower and visiting a gift shop. The episode captures a fun day of travel and sightseeing, ending with the group getting ready for bed and a "to be continued" teaser, leaving the audience excited for part two.

Derek and his friends continue your holiday adventure in the borough of Cometsdale just days before the true Summer fun. has started. The day is packed with activities, starting with a McDonald's breakfast followed by a trip to the cinema to see the "Multiverse" movie in 3D, including a special short film you created. After enjoying lunch at Burger King and a massive shopping spree at Target, the group returns to the hotel to relax and watch Dereck's Talk Show on TV. The episode concludes with everyone heading to bed after a long, successful day, wrapping up this part of the Cometsdale trip for Derek & his friends.

Derek & his friend group's adventure in Cometsdale continues with a morning trip to IHOP for pancakes and some exciting news on TV about a new short film from Microsoftell Pictures. After receiving a mysterious package containing a "cyber shredder" guitar from Richard, the group heads out for lunch at McDonald's and a walk, which takes a dramatic turn when you are confronted by a hostile stranger. You manage to defend yourself and your friends before returning to the hotel to rest, though the episode ends on a suspenseful note with a mysterious voice issuing a warning, leaving the audience eager for the next installment.

Derek & his friends wrap up their holiday by checking out of the hotel and heading back home to Galaxyville. After a two-hour drive, the group returns to their apartment to unpack and settle in, where Alex reveals a new pet fish named Percy that he adopted during the trip. To celebrate their return, everyone decides to head out for milkshakes, ending with a playful race downstairs where Alex loses and has to foot the bill. This episode brings a cozy conclusion to the vacation arc for Derek & his friends, leaving the group happy and reunited at home.

the series returns after a nine-month break with a brand-new episode with a relatable household struggle. After Derek's old thermostat breaks, he heads to Target to buy a modern replacement, despite a warning from the cashier about the chaos it might cause. Back at the apartment, a "war" quickly breaks out as Derek and his friends constantly clash over the temperature, leading to a series of comedic arguments and even the thermostat seemingly operating on its own. Ultimately, frustrated by the "evil" piece of technology, Derek decides to return it to the store, concluding that some modern gadgets just aren't worth the trouble for Derek and his roomies

The crew celebrates reaching double digits with a brand-new theme song and a chaotic new invention. X introduces the "Lie Detector 3000," a device meant to detect honesty with 100% accuracy, which quickly leads to a series of comedic and awkward revelations among the group. As Derek and his friends take turns being grilled on everything from fashion sense to stolen meals, the machine eventually malfunctions, beeping uncontrollably at every breath and blink. Despite your efforts to unplug and even trash the "evil" device, it continues to haunt the group with its persistent beeping, leaving Derek to conclude that some truths are better left unknown.