Her husband is a salaryman, and Ayako (Ayaka Ayako) runs an esthetic salon. Her sister Kanako borrowed money using the shop as collateral and fled, leaving Ayako to either repay the debt or give up the shop under pressure from loan sharks. Working under the new manager Shirakawa sent by the loan sharks, Ayako is subjected to lewd training. Through a scheme, she swears to be a slave, enduring humiliation and shame while having her pride trampled upon.
