The drama focuses on the life and relationships of a group of university students, particularly the difficult relationship between Hong Seol and her senior, Yoo Jung. Jung is the rich heir to Taerang Group and seemingly has the perfect life, but also displays psychopathic tendencies, which causes Seol to take time off school to get away from him. When she returns through a scholarship that was intended for Jung, he is unexpectedly nice to her and asks her on a date. They begin an awkward relationship which is further complicated by the arrival of Baek In-ho and his sister Baek In-ha, childhood friends of Jung who were both adopted into his family after running away from their abusive aunt as children.