Jeong-seop, a college student who has no interest in studying. Her mother Eun-ju decides to give her pathetic son a part-time job at a karaoke room run by her friend in order to give her social experience. However, surprisingly, he does a better job than expected and is popular among young girls. However, Jeong-seop falls in love with Hee-jeong, his mother's friend, rather than the young girls. He confesses to Hee-jeong and Hee-jeong accepts him...