Jung Nim, a North Korean middle class worker, defects from the North following the accusation of watching a porn video. Her husband barely gets Jung Nim out of the country but is arrested by the North Korean security forces. Jung Nim lives in South Korea under the surveillance of Kim Soo Jin, who was assigned to do this by the government. Jung Nim feels lonely, and then meets Oh Sung Tae, a patrolman. But as time goes by, it's her husband that Jung Nim misses and worries about more and more. It is then that she hears news about her imprisoned husband through her watchdog Soo Jin...