Mio lives alone with her mother. When her mother falls ill, Mio offers to take on the helper's job in her place. The landlord, who is a lecherous old man at heart, agrees to hire her on the condition that she does anything. He naturally expects her to go as far as performing oral sex, paizuri, and even forced unprotected sex. Reluctantly, Mio opens her body to him, becoming the landlord's plaything, but eventually...