Living with her sickly brother, Mai decides against working for an insurance company. One day, due to a work mistake, she causes damage to a tenant in her rental property business. Not wanting her company to know of her negligence, she offers to help a wheelchair-bound male tenant with his daily needs. The man takes advantage of Mai's vulnerability, demanding not only personal care but also assistance with sexual activities, claiming it's part of the job. Initially reluctant, Mai, through repeated acts of shameless behavior and unprotected sex, begins to find pleasure in being ordered around, gradually falling into the role of a submissive sex slave.
