Park Chan-hwan

Chae Gyeong is an ordinary art high school student. One day, she hears totally unexpected news that, based on her grandfathers will, she must marry the unemotional Crown Prince Lee Shin who attends the same high school. Chae Gyeong resists the proposal, but reluctantly marries him to help her debt-ridden family. (mydramalist.com)

Ha-young, an orphan, becomes a tutor for Ki-sook, her friend, and moves into Ki-sook's home. There, she meets Ki-hoon, Ki-sook's brother, and falls in love with him. However, Ki-hoon's destructive personality becomes a burden on their relationship.

When Da Jung was 13 years old, her mother Young Hee went missing and her father Nam Ho was arrested for her murder. He was released due to a lack of evidence. 15 years later, Da Jung is now a doctoral student of psychology at a university. She has avoided her father for the past 15 years, due to anxiety that he might really have killed her mother. One day, a skeleton and Young Hee's car are found at a reservoir. Nam Ho is arrested again.