Reina, who had been living happily with her husband and father-in-law, one day suddenly finds herself violated by her father-in-law, who had been lusting after her well-rounded body. Almost every day, she is forced to satisfy his sexual desires, growing more and more repulsed. However, with his skilled techniques, she is brought to climax repeatedly, falling into a routine of being pleasured by his raw manhood. The wife's face shows a trance-like expression as she becomes increasingly obsessed with her encounters with her father-in-law.