Marinette's job of being Ladybug has put her in challenging places. Yet, as one fight leads her falling, only one person can catch her: Chat Noir. As she stands back up, Marinette faces another problem: her miraculous. Together, with Chat, the superheroine will find out the truth about herself, and the miraculouses.
The relationship between Marinette and Adrien start to be looking up, but when a tragic incident occurs with Chat Noir, Marinette discovers that she doesn't know everything about her Miraculous power. It's when Chat and Ladybug start investigate their new powers that everything starts to turn downhill and Hawk Moth changes everything.