Marinette is in love with Luka - but instead of confidently approaching him, she hardly says a word when he is around. While she only sees Adrien as a good friend, her heart speeds up every time she meets Luka. But as a multimouse, it feels different. Strong, independent - and in the darkness of Paris she meets Viperion. Without knowing it, they build a close friendship as superheroes. They fight side by side, share secrets and trust each other blindly. But how long can they lose themselves in the hidden melody of their masks before the truth comes to light?