Tento once again finds himself in a tight spot when he's accused of trying to murder the school's Madonna, Reiko Shiratori, and locking her unconscious body in a shed. Can Abaku argue his friend to freedom? Meanwhile, the Red Ogre sends out a warning to Abaku, Sarutobi, and Yui: Find out his identity before graduation or he will murder all of their classmates again. Can Abaku solve this final mystery in time?!?