As Marinette tries to convince herself that she loves Cat Noir to try and forget about Adrien, Adrien, who has given up on being in love with Ladybug, tries to find a way to declare his feelings to Marinette. As everything turns upside down in their lives, Ladybug and Cat Noir exchange their Miraculous to escape a ruthless villain. But the return of Mister Bug is about to make things even more confusing in Lady Noire’s heart.