After her divorce, Chieri lives with her son Taichi in a small wooden apartment. Although they are poor, they are happy enough, but Chieri accepts a marriage proposal from Tabuchi, the manager of the supermarket where she works. However, Taichi cannot forgive his mother being taken by someone else. Just then, Taichi comes home from his part-time job and sees his mother and Tabuchi having sex at home... "I won't let anyone else have my mother!!" And so, Taichi devours his mother's body right next to Tabuchi...