Ladybug lost Miraculum and Kwamis. She and Black Cat are now only left with their Miraculum boxes. Dark Moth, now named Monarch, has never been so close to victory. Perhaps now she can grant Miraculum powers to her infected Akuma people to create ultra-powerful villains. But our heroes, working as a duo, will unite more than ever before. The new trial will significantly impact their relationship and private lives. Nothing will ever be the same.