Matsuri married her boss at work, a man 30 years older than her. At the same time, she became a stepmother to an adolescent boy, but she closed Kokoro off to her stepchild and her husband, the father. Naturally, Matsuri was never accepted. Having lost his mother at an early age, the stepson, who had never known love, let his twisted desires run wild and, together with his bad friends, made a plan to attack Matsuri...!!