A married woman named Risa Shirogane struggles to pay off her late husband's debts while raising their son and living with him. Life is tough, and she has been behind on rent for three months. Her landlord, Mr. Sagawa, constantly hounds her about the overdue payment. In desperation, she agrees to accompany him in his hobby—which turns out to be bondage—in exchange for letting her family stay in the house until she can afford the rent. As she obediently submits to his commands, her bound body becomes the object of his lustful desires, and he takes full advantage of her vulnerable situation...