Eun-jin suffers a blow to the head while fighting another group of gangsters. She loses her memory and does not even know who she is. Jae-chul coincidentally finds her and brings her to his house. Eun-jin starts working in Jae-chul's Chinese restaurant as a delivery person. At times her past resurfaces when she unconsciously shows her remarkable dexterity with knives and scissors. One day she happens upon a bank robbery, where she dispatches the thief with extraordinary martial art skills. From that moment on, she becomes curious about who she really is, and what she did for a living.

(Source: http://www.koreanfilm.or.kr)