The battle is over. Shadowmoth is gone. Identities have been revealed, the lost Miraculouses have been recovered, and Paris is finally safe. Marinette should be happy. Instead, Adrien Agreste—Chat Noir, her partner, the boy she loves—never woke up after the final fight. As days turn into weeks and hope begins to fade, Marinette becomes obsessed with finding out why. Because heroes are supposed to save people. And she refuses to believe she saved the world only to lose him.