One day Mio attends a middle school reunion and is reunited with her first love, Shuichi. Her love is rekindled when the guy approaches her, but they get caught up in an incident where members of the reunion start dying one after another.
Tatsuya Fujiwara plays a talented detective who trades hardened criminals for troubled teenagers. Placed in an unruly public junior high school, he gets to work contending with the many problems it faces and uncovers some more serious ones. While the detective tries to operate in the hard-line way he knows best, he finds himself confronted by a skeptical and fiery teacher, played by award winning actress Yoko Maki.
Yukimasa Yugami is a detective who chases after facts in cases. He will resort to illegal investigations and he uses his unique reasoning powers. His partner is rookie detective Torao Hanyu.