Six years into marriage, kindhearted Saki works hard as a home-care aide to support her tight household budget. Her new client is a wealthy older man who lives alone and claims to keep a fortune in cash because he distrusts banks. He tempts her with promises of an inheritance and asks her to care for his lower body too. Seduced by the money, the married caregiver agrees to keep having sex with him until he dies, only to be deceived and have her ripe body devoured by the insatiable old man.