An invitation to the class reunion has arrived. It was a pension in Shinshu that she visited five years ago during a tennis training camp for my high school club. One girl who was there committed suicide. Why a class reunion in such a place... Six friends and one teacher meet again after a long time. From that night onwards, a series of murders begins, with participating women being brutally raped and then killed. What was the criminal's intention? Who will be killed next? While everyone trembles in fear, the evil hand finally approaches the office lady....