Emi Sasaki works as a waitress at a café located in a rundown shopping district, where the customers are mostly elderly locals. She earns 900 yen per hour and, due to the older clientele, gradually learns to cheat them on change. One day, a regular customer in his 70s catches her in the act and demands, "I'll give you a thousand yen if you show me your breasts." She reluctantly agrees to get out of the situation, but things escalate—5,000 yen for touching her breasts, 10,000 yen for a handjob. Then, the man suddenly dies of a heart attack, forcing Emi to undergo police questioning. Despite this trauma, another man approaches her with similar demands, terrifying her and prompting her to quit the café. However, she soon discovers an advertisement for a high-paying part-time job, leading her to explore a new path.