Jason and Marinette star in their very own unsolved mystery adventures.

Fresh off tour with her band, Marinette experiences the indignation of her classmates. Good thing that this time, she has backup.

When Marinette Dupain-Cheng's class betrays her, the school faculty turns a blind eye, and her crush Adrien Agreste acts like she isn't worth defending, Marinette is shattered into a million pieces. However, her parents transfer her to a prestigious art school to hone her skills, and new friends who call themselves the Quantics help pick up those broken pieces and puts her back up together. Will Marinette and her new friends defeat Lila, Alya, Adrien, and the rest of her ignorant classmates? Will Marinette find herself in another crush? And will Marinette expose her identity?