Riho lives with her mother. In order to ease the burden on her sick mother, she works as a helper at the home of her landlord, who is wheelchair-bound. However, the landlord is a dirty old man through and through. When she dries her body with a towel, he demands that she do something about her private parts. He gives her a hand job, a titty fuck, a blowjob, and even a creampie. Riho is unable to hide her confusion, but as her landlord fondles her H-cup breasts and she becomes submissive, she discovers the pleasures of being a woman and begins to desire them herself...