Minami is tasked with caring for Mr. Yamada, an old man, as repayment for her father-in-law Tokuji's debt. However, Mr. Yamada demands more than just care from Minami; he forces her to tend to his private parts. Initially confused by this unexpected turn of events, Minami gradually realizes that she finds abnormal excitement in having sex with the old man and eventually starts demanding Tokuji's body as well…
