Yuriko's husband, Takashi, is a deep-sea fisherman. He is only home for 10 days a year, leaving Yuriko feeling lonely. Their son Tatsuya worries about his mother but can't stand the rundown fishing port town any longer and considers moving to Tokyo. Meanwhile, a fisherman from the cooperative, Mamoru, occasionally visits Yuriko's house with fish. He has feelings for Yuriko but is intimidated by Takashi, leaving him in a state of frustration. Unable to bear it anymore, he assaults Yuriko. Learning of this, Tatsuya also begins to harbor explosive desires for his mother. Yuriko, unable to handle Tatsuya's desires…
