Marinette's class is headed to New York, the city of superheroes, for French-American Friendship Week. But the arrival of Hawk Moth will complicate everything.

On school break, Marinette heads to Shanghai to meet Adrien. But after arriving, Marinette loses all her stuff, including the Miraculous that allows her to turn into Ladybug!

Ladybug and Cat Noir discover the existence of a parallel universe in which they're supervillains determined to seize the Butterfly Miraculous.

To save the future from a terrible fate, Marinette becomes Chronobug and teams up with Bunnyx to defeat a mysterious opponent who travels through time.

Kagami drags Marinette to Tokyo to help the Stellars defeat a new supervillain, but Marinette soon realizes her friend has another, untold reason for this trip to Japan.