Monarch has just placed the final pieces of his villainous plan on his chessboard of evil. He has nothing left to lose, because today will be his final day. The plan he has put in place is more ambitious than ever. Global, merciless, radical. If he were to fail at seizing Ladybug and Cat Noir’s Miraculous, the world would live forever in chaos. The unsuspecting Marinette and Adrien have already fallen victim to this plan. Are Ladybug and Cat Noir doomed? Will Monarch win in the end?