Mina Kitano plays a busty wife preyed upon by a virile father-in-law from her past, who subjects her to repeated creampie sex. Two years into her marriage, Mina's husband remains estranged from his arrogant father. One day the man somehow obtains their number and calls, claiming he has been injured and needs temporary care. Though the demand is selfish, her kind husband relents and agrees to help for a fixed period. At his family home, Mina discovers that her father-in-law is the same customer who was banned from the sex establishment where she reluctantly worked before marriage after trying to force intercourse on her. Now his relentless breeding sex overwhelms her with pleasure until she completely submits.