Ichika was working hard at multiple part-time jobs to earn money for her beloved boyfriend's tuition, but due to fatigue, she repeatedly made mistakes at work and was told that she would be fired. However, she desperately needs to earn money, so when she pleads with her store manager, she is forced to perform sex work during the late-night shift. Ichika tearfully accepts her unreasonable request, but it also inflames the lust of her deputy manager, who relentlessly trains her plump body...