Claude and Marie Verneuil will soon be celebrating their 40th wedding anniversary. For the occasion, their four daughters - Isabelle, Odile, Ségolène and Laure - decide to organize a big surprise party in their family home in Chinon. They also decide to invite, each, the parents of their respective husbands - Rachid Benassem, David Benichou, Chao Ling and Charles Koffi.
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!
Xin is a young girl who, after the death of her parents, decides to leave China to discover the world. To finance his trip, Xin works and sleeps in a supermarket in the suburbs of Paris. Her quest is hampered and her life put in danger. She first comes up against the passion that her new boss, Yin Chen, has for her, desperate not to be able to possess her. Preventing the regular theft of the warehouse, she then becomes the target of two of her colleagues ready to do anything to eliminate her.