The episode starts in a nightmare that Marinette is having. Especially now that she’s entrusted her with the Fox Miraculous long-term! Has Marinette made a mistake? As she turns up at Alya’s to tell her about her doubts, Shadow Moth creates Sentibubbler, a Sentimonster that traps all Alya’s loved ones in bubbles in the Paris sky… and will only release them if Rena Rouge betrays Ladybug and Cat Noir! Will Marinette stop her nightmare from coming true? Marinette knows this and fears that he will use this information against her best friend.
Shadow Moth has found out that Alya is Rena Rouge.
