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!

Marinette’s class is headed to New York, the city of superheroes, for French-American Friendship Week. The whole class is there…except Adrien, whose father refuses to let him go!

After a guardian of magical jewels turns an awkward girl and a popular boy into superheroes, they can never reveal their identities — even to each other.