Sachiko, a married woman with big tits living alone with her son, gets caught in a garbage disposal dispute with her neighbor one day. The neighbor, who had previously shown interest in her breasts, takes the opportunity to roughly grope and squeeze her nipples. Her son silently returns to his room, but watches from the kitchen as the man violently plays with his mother's big tits. What unfolds appears disturbingly natural, as if part of everyday life, yet the scene leaves the son utterly shocked.