LIM Gye-sun is a North Korean spy sent to South on a mission of capturing KIM Young-kwang. She uses the name of PARK Hyo-jin and works in a fast food restaurant. She works as a waitress during the day and as a spy during the night. CHO, Go-bong who failed the university entrance exam for three times falls in love with her at the first sight. And the next is all about his love chase towards her.

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