Reiko, who is spending her days alone while her husband is away on a long business trip, is hoping that her husband will come home for her birthday, but he coldly refuses. But her perverted landlord has his sights on her. He casually visits her house and approaches her under the pretext of "repairing the door," and when he finds the right timing, he pushes her down, saying, "Ma'am, you must be really lonely." Reiko accepts the situation out of loneliness, but this is the beginning of her abnormal days...