About the title
Owners of talismans from another world appear in Paris. They come from a parallel universe where everything is reversed: the owners of the Ladybug and Black Cat talismans, Toxic Bug and Super-Claw, are villains, while the owner of the Butterfly talisman, Esperia, is a superhero. Ladybug and Cat Noir must help Esperia repel the attack of their villainous counterparts and prevent them from seizing the Butterfly Miraculous Stone.
