Now that Isabella is back in Paris, everything seems to be going great! Well, almost. Adrien decides to try and break up with Kagami, and even writes down pros and cons to help influence him. On the other hand, he's dealing with not only his father, but Lila as well. Alissa decides to try and uncover something about the Bevy of Swans and hopes to find out more about the swan who attacked Hawk Moth and Mayura and tried to kill them. Marinette decides to focus her attention on confessing her feelings for her best friend. She gets pointers from different couples in the school to figure out the best strategy. Isabella decides to move into the Le Grand Paris hotel after finding out that she and Chloé have another half-sister, who acts exactly like the old Chloé but worse. She also has to deal with a huge bomb drop involving Gabriel Agreste. On top of that, the four are guardians of the Miracle Box and babysit a bunch of kwamis.