Young-jae, a teenager born from illegally sold sperm, goes to Chi-sung, a physician who had sold it when he was 20 years old. Young-jae demands a so-called ‘compensation for damages,’ claiming Chi-sung is responsible for his defects. Although at odds with Young-jae, Chi-sung slowly feels a connection to him. Later, Young-jae’s father Dong-suk appears and the three of them clash.