Keiko remarried Shohei and took their son Shinichi with her. Shohei values his family and gets along well with his son, Shinichi, and Keiko feels happy in her new life with him. However, one day, she gets a call from her ex-husband, Toru. He tells her he wants to start over again, and Keiko can't help but worry that their happy days together will be ruined. And her fears become reality. When Keiko and her husband Shinichi go out, Toru suddenly appears in front of her, looking insane and with glazed eyes...