miku, who lives with her mother, starts a part-time job supporting the daily life of the landlord who lives in a wheelchair in place of her mother, who has fallen ill. however, the lecherous old man landlord picks on her and demands even lower body care. he forces miku, who can't refuse, with handjobs, pussy licking, and deep throat, and eventually raw creampie sex. even after that, the landlord's lewd acts continue to escalate, but miku, who was supposed to hate it at first, ends up honestly accepting her life as a sex slave as she continues to be fucked by the landlord.