「さくら」の歳の離れた夫は精力が減退し、求める彼女を満足させる事ができない。性欲を持て余した彼女は、家に出入りする三河屋を火遊びのつもりで誘惑する。しかし、その逞しい体とチンポに夢中になってしまう。味をしめた三河屋も玄関に上がり込み彼女を激しく求めて行く。彼とセックスがしたくてたまらない「さくら」はオナニーを見せつけチンポを要求。翌日、二人は白昼の自宅で激しく求めあう。そして妻と三河屋の関係を知りながら、自分の不甲斐なさを恥じ一部始終を静観する夫の姿があるのだった。Sakura's aged husband has lost his vigor and is unable to satisfy her needs. Having no more sexual desire, she seduces Mikawaya, a man who comes in and out of her house, as if he were playing with fire. However, she becomes infatuated with his muscular body and cock. Mikawa-Ya gets a taste of it and comes to the front door, demanding to have sex with her. Sakura, eager to have sex with him, shows him her masturbation and asks him for his cock. The next day, the two of them are in each other's house in broad daylight. The husband, who knows about the relationship between his wife and Mikawaya, is ashamed of his own inadequacy and watches the whole thing.