In her third year of marriage, Haruka and her husband were living modestly but happily. One day, her husband got into trouble with a gangster (Oshima). He was approached by a woman he met in the entertainment district and forced to drink alcohol...and the next morning, he found himself naked in a hotel room. The woman was Oshima's wife, and she had successfully caught evidence of his infidelity. It was no doubt a honey trap, but since he had no memory of his innocence, Oshima could not resist. Oshima, accompanied by his henchmen, barged into Haruka and her husband's house and made an unreasonable demand: "Pay 3 million yen in compensation, or let your wife do the same to you."