Hina lives with her mother. In order to help out the family, she decides to work as a helper at her landlord's house. At first, the landlord was hesitant to take on the job, but when Hina says she'll do anything, he takes a wicked liking to her and demands that she take care of her private parts. The process escalates day by day, from handjobs to titjobs to blowjobs, and finally to raw creampie sex. At first, Hina is confused, but as she becomes obedient to her landlord, she discovers the joys of being a woman and gradually becomes his sex slave.