Park Hoon aspires to be a top thoracic surgeon and enrolls in Pyongyang Medical University. Hoon proposes to his love Jae-Hee, but she falls victim to a political purge and is taken away to a detention camp. Years later, Hoon is working as a thoracic surgeon at a military medical laboratory. When Jae-Hee is brought in while on the verge of death, Hoon attempts to flee from North Korea with her.