Married woman Misaki, under her husband's orders, films a documentary-style record of her sexual encounters with other men. At 29 years old, five years into her marriage, and working as an office clerk with no children, this demure housewife nervously checks into a hotel with a man she's meeting for the first time—all to fulfill her husband's desire for NTR. She records her own breasts being groped from behind, narrating the foreplay while gasping for breath. As the man's cock enters her, she whispers, "It's big," then moans in ecstasy, riding him in cowgirl position until her body convulses. Later, following her husband's wishes, she's restrained with bondage toys, penetrated repeatedly, and captured on camera writhing and squirming as she finally admits to feeling pleasure.