Miyuki is a good wife who supports her husband who is pursuing his dream as a part-time writer. One day, her husband's editor, Sashima, comes to the house... "Ma'am, it's up to you to make your husband see the light of day," he says, asking for a sexual contract in exchange for getting her husband's manuscript through the final screening. Not wanting to disappoint her husband, Miyuki accepts Sashima's request. However, her body is brought to orgasm again and again by the intensity of his cock, which is thicker and stronger than her husband's.