Misuzu, 23, works at a convenience store with her boyfriend while they save money to live together. The spiteful 56-year-old night-shift worker gets on their nerves, and she gradually begins sharing more shifts with him. Caught in the older man's trap, Misuzu is drugged and driven wild by persistent caresses and his huge cock creampieing her. She gives him titjobs, kneels and begs for sex, and endures toy play without alerting her boyfriend. Defeated by pleasure, she finally submits to the contemptible older man she once despised.