Choi Myung-Bin

A Child Protective Services worker is approached by two siblings who need his help.

The love story of Na Hee-do who manages to become a member of the National Fencing Team and Baek Yi-jin’s whose family goes bankrupt due to the financial crisis. He is forced to take up several part-time jobs and later becomes a sports reporter. In present day, Na Hee-do's daughter, quits ballet and "runs away" to her grandma's house. During her stay, she comes across her mother's diary, through which the story is then told.

Moo Jin-hyuk (Jang Hyuk) is a "mad dog" detective who becomes guilt-ridden after his wife was murdered while he was at work. Kang Kwon-joo (Lee Ha-na) is a tough policewoman who is gifted with perfect psycho-acoustics skills and went for voice profiling. (wikipedia.org)