To join Adrien in Shanghai, Marinette visits her uncle Wang Cheng for his birthday. But as soon as she arrives, her purse is stolen with Tikki inside, leaving her unable to transform into Ladybug! Alone and lost in a big city, she teams up with a mysterious girl named Fei. Together, they discover the existence of a new magical jewel, the Prodigious. But Hawk Moth is also in Shanghai, and he will stop at nothing to claim it. Can Marinette and Fei save the day?
