mai, who works at an insurance company, lives with her sickly younger brother. one day, she causes damage to a tenant in her rental management business due to a work mistake. mai, who doesn't want the company to know about her negligence, offers to take care of a male tenant who lives in a wheelchair. the man takes advantage of mai's weakness and demands even help with sexual disposal, saying "this is also work." mai, who was initially reluctant, begins to feel pleasure in being commanded as she continues to engage in shameless acts and creampie sex, and falls into becoming an obedient sex slave.