Hitori Micado, a 16 year old second year at Kamiya High School in the Chiyoda ward of Tokyo, Japan, is known for his insane knowledge of everything that is happening around him, but he hates to show it. He feels like an outsider in his own school, friend group, and family because of his knowledge, but what if he could put it to use to solve a murder? A third year girl at Kamiya High School is found stabbed and hung inside a janitors closet with only a whit slip of paper in the pocket of her uniform thats says, 'Game On.' Now it's a race against time to prevent another murder as Hitori teams up with the local detectives to find the suspect. Will he do it? Or will the killer get away?