Ladybug and Cat Noir must face a new enemy – mysterious, worrying, elusive, and yet close to them. Very close, but they have no idea. Marinette and Adrien too have never been so close to each other, but that does not necessarily make their everyday life a bed of roses, for they keep secrets from each other. The biggest secret being that they still do not know that they are Ladybug and Cat Noir. In a new and exemplary green Paris, in the heart of a new and revolutionary school, our heroes are about to experience a school year full of emotions and revelations.