An assassin from an early age, been taught to kill in Yanbian,China.
Agent for South Korea's intelligence agency, promised her freedom after 10years service. She dreamed of different type of life, but 2men from her past make an unexpected events in her life, brought-out dark secrets from her past.
Depois da morte de seu mentor, assassina passa a trabalhar como agente do governo com a promessa de ficar livre após dez anos. No entanto, ela descobre vários segredos do passado.