Sara, a college student, started working at a delivery health service to pay for her tuition and living expenses. She had gotten used to the job and thought, 'I can make money, so whatever.' However, when she greeted the customer at the entrance of the dispatch location, it was unexpectedly her seminar professor. Shaken further, the professor uses school rules and his position as a shield, demanding that in exchange for not speaking out, he will comply with the "teacher's wish." Unable to refuse, summoned, the demands gradually escalate. Surrounded by disgust and fear, heart and body somehow become unable to escape the "secret relationship."
