A married woman in her third year of marriage, living with her husband's father. Her busy husband is often away on business, leaving her unsatisfied and resorting to masturbation. However, her father-in-law catches her in the act. One day, her secret lover, a delivery man, arrives and they have sex, but once again, her father-in-law witnesses the encounter. He then uses this knowledge to demand her voluptuous body, threatening to expose her infidelity to her husband. Unable to refuse, she gives in and opens her legs. Later, she's secretly drugged and raped by her despised father-in-law, climaxing repeatedly under his forceful control.