Yumiko Izumi (Asuka Tenno), now in her forties, is at the peak of her career as a working woman. To dispel the sense of emptiness that comes from having abandoned her femininity, she registers with a lover bank and, under the name Yuko, is embraced by men every night. Yumiko's client, President Ishihara, suspects his wife Yoshie (Miki Yoshii) of infidelity and devises a plan for revenge: summoning a woman from the lover bank to have sex in front of Yoshie. The woman who unwittingly gets called by Ishihara turns out to be Yumiko. Embracing her lustfully, the man she admired brings out Yumiko's true nature as a woman…
