It is a romantic comedy series about the hate-to-love relationship between Nam Ha-neul and Yeo Jeong-woo, who both had promising prospects in their careers, but fell into a slump due to different circumstances. Ha-neul and Jeong-woo were high school rivals who despised each other and parted ways after finishing school. But when they are forced to quit their jobs as doctors, they end up living together at Ha-neul's house.