Kidnapped as children, Park Hoon and his father were deported to the DPRK where they grew up. He learned to be a doctor there, following in the footsteps of his father. Upon his return to South Korea, Park Hoon sets out to earn enough money to return to North Korea and rescue his long-lost sweetheart. Then he meets and falls for a strange woman who looks precisely like her, and he'll stop at nothing to discover her.