To repay a debt her husband secretly borrowed from a friend named Sayama, Chihiro Aki is forced to work as a nurse at Sayama's hospital. Coerced by her husband into accepting the job under false pretenses, she reluctantly agrees. On her first day, she's confronted with male genitalia for the first time. Though she was told in advance she'd be working in the urology department, she feels uneasy about touching a man's body other than her husband's. Immediately scolded harshly by Sayama, she's then shocked when he makes an unexpected proposal—to help her "get used to male genitals." Watch as a new, humiliating relationship begins to unfold.