LEE JONG SEOK as Park Hoon He is a son of a respected surgeon. He and his father were kidnapped by North Korea, and while there, his own genius as a doctor is nurtured, receiving first hand training from his father. With his exceptional skills, he becomes a department head/lead at a hospital there. While in the North, he also meets his first love and destiny, Song Jae Hee, but one day, she’s taken away from him. The incident drives him to do anything to find her … even in South Korea, where he eventually escapes.