Miku, who lives with her mother, starts a part-time job to support her wheelchair-bound landlord, who is in poor health. However, the lewd old man makes a fuss and demands that she do something about it. Miku can't refuse, so he forces her to give him a handjob, a titty fuck, and a deep throat blowjob, and finally has raw sex with her. The landlord's lewd acts continue to escalate, and although Miku was initially reluctant, she soon begins to accept life as his sex slave as he continues to make her cum.