Azu, who worked hard at several part-time jobs to earn money for her boyfriend's tuition, was fired after making repeated mistakes due to fatigue. However, she begged the manager to let her earn money, and he gave her the condition that she perform sexual service during the late-night shift. Azu reluctantly accepted the unreasonable request, but it also aroused the lust of the senior employee... and her young body was relentlessly trained.