While Marinette Dupain-Cheng (Ladybug) and Future Alix Kubdel (Bunnyx) are fighting against Cat Blanc to fix the mistake that Marinette have made, the Supreme Kaioshin of Time Chronoa and Xeno Trunks gives Gustavo da Silva Mello "Gu 10" a mission given by Henry Emily and his friends at the Equestria Girls World.

There the Celestialsapiyan also meets a girl called Kuriko Akatsutsumi, the younger sister of Momoko Akatsutsumi, she tells him everything what really happened and tells the whole truth about this world, they join forces to put the end of this nightmare once and for all.