* Soo Jung-min: a young woman who works at a publishing company and is searching for her identity and place in the world.
* Seon-yeong: a beautiful and talented actress who is married to a wealthy businessman but is suffocating in her life.
* Jin-hong: a handsome and charismatic writer who is Soo Jung-min's boss and is haunted by his past.
Supporting characters:
* Yeong-sook: Soo Jung-min's elderly mother who is struggling to cope with her husband's death.
* Kyu-jong: Soo Jung-min's brother who is a successful businessman but is also addicted to gambling.
* Yeon-ju: Seon-yeong's best friend who is a successful businesswoman but is also struggling with her own personal problems.
* Min-joon: Seon-yeong's husband who is a wealthy businessman but is also a cold and controlling man.
* Ji-hye: Jin-hong's former lover who left him for another man and is now married with two children.