Cosmo, Sam, Luna and Aïssa are mega fans of a game of magic marbles: the Marblegens. They discover that this year, the winner of the Marblegens Tournament will win the legendary Marble Origin Mercury!

Cosmo, Aïssa, Sam and Luna decide to prevent Marcellus King from getting his hands on the Marble Origin: they create the team of Meteors and try to register for the tournament

When an alchemical incident in the Lab creates a spatial loop, the Meteors are prisoners in the Observatory!

Cosmos borrowed the Costello's Spell Book, despite Zumeo's interdiction. Archi and Lardo manage to steal it. The Meteors have to retrieve the book at King's Corp and get back on time to play their match against the Crimson Knights.

The Meteors learn that when Zumeo was young he and Gaia Fulmina, the Olympian alchemist, were snipers on the same team!

A shopkeeper offers Luna a product with exceptional properties (the mythic Uroboros fangs)!

Aissa has to participate in a dance audition on the day of a big match.

A sports clothes brand wants to make Cosmo its new icon.

The Mirages have apparently gotten their hands on a powerful creature Marblegen, Charybdis, which draws all opposing creature marbles to it and swallows them whole. The Meteors panic

A mysterious team made up of a single masked sniper-alchemist - Unik - takes on the Meteors.

During a match against the Meteors, the Shadows play CHRONOS, a Marblegen that rewinds time if they're losing a match.

Our heroes take on the Druids, who use plant marbles with the terrific powers of flowers and plants!

The Meteors face the Werewolves and their terrifying marble LYCAN. Moreover, they have to play on the night of a full moon.

Cosmo foolishly uses Lethe, a marble that makes you lose your memory, which Zumeo wanted to use to forget the shame of losing Mercury.

Bombi has tracked down Cosmo and Sam. He steals the Gemini astroset and demands that Cosmo and Sam come home to play the clandestine matches that made him rich in the past.

Romulus has been destroyed! It's a tragedy! But there might be a chance to rebuild it

The Meteors take on the Fizzinis, a ""circus"" style team, during a very acrobatic Parkour Battle with certain shooting areas very high in the air

When she finds an old family recipe for Bellatrix, Luna starts making the marble.

Zumeo has gotten his hands on Vulcan, a Marblegen capable of jeopardizing all-powerful Jupiter and the Marbletechs.

Sam wants to play at apprentice alchemist but he keeps making mistakes!

When she wants to create Mesarthim to complete the Aries Astroset, Luna forgets to watch the temperature of the Marblemachine, which implodes.

In his Marblegen collection, King possesses QUETZALCOATL (one of the ultimate Mayan gods, capable of capturing the soul of Spirits/Creatures in his lair!).

The Meteors match against the Tsareviches is interrupted when Baba the Alchemist (100 years old!) faints.

The Meteors have a match officiated by Jack Snake, a new referee, who causes them to lose with unfair decisions!

Aïssa, Cosmo and the Olympian Snipers try to capture Phobos, a terrifying marble.

When Hermes gives them a prophetic dream, the Meteors decide to borrow the strongest marbles from the other teams to win Mercury instead of King!