A young wife with a voluptuous body in her fourth year of marriage lives with her husband's father. Her busy husband is often away on business trips, so the couple has no sex, leaving her frustrated every day. The wife masturbates, but her father-in-law smirks as he watches. One day, she has sex with her cheating partner at home, but her father-in-law is watching again. Then, the father-in-law uses the fact that he witnessed her masturbating and cheating to ask for his body. He threatens to tell her husband, so she can't refuse and opens her legs. She then comes to his house at night and is raped by her father-in-law, whom she hates, and is made to cum many times.