After discovering his wife's infidelity, a husband enlists the help of GOS staff to fulfill his desire for her to engage in sexual acts with a blood relative. Having learned six months ago about his wife's incestuous affair with his older brother, the husband approaches the director with a request. The director makes contact with the married woman, first establishing a sexual relationship with her and promising to show her husband footage of their encounters. During pillow talk, sensing her lingering attachment to her brother, the director encourages her to rekindle the incestuous relationship. With the director present as an observer, the siblings begin having sex, which is recorded on camera. Suddenly, the husband bursts into the room, while the brother, aroused by his sister-in-law's moans, reveals his face. Chaos ensues, but after persuading the siblings, the sexual act resumes. The husband joins in, turning it into a threesome, driving the married woman into greater depravity as she reaches climax.