Se-Jin (Jung Yu-Mi ) leaves her small hometown for the big city of Seoul after landing an IT job with an upstart company. She initially enjoys the best days of her life in Seoul. Her job is going great and she has a boyfriend who works as a computer programmer. Se-Jin's honeymoon with Seoul soon comes to an end when her company goes bankrupt. Her boyfriend finds a new job and leaves Se-Jin behind. Se-Jin must also find a cheaper apartment to rent.
Se-Jin now moves into a poor area of Seoul while looking for a new job. Although she has quite a few interviews lined up, none of her interviewers will take her seriously. Furthermore, her next door neighbor is a strange older man named Dong-Chul (Park Joong-Hoon).
Dong-Chul (Park Joong-Hoon) is a low level gangster waiting for payback from his boss after going to prison in his place. In the meantime, Dong-Chul is usually broke, has bad manners, & has a hot temper. He first thinks of his new neighbor as an odd girl that's somewhat of a pain.
One day Se-Jin remarks to Dong-Chul "hey you look like a gangster what do you do for a living?" Dong-Chul responds "I am gangster". Can these neighbors get along? Will Se-Jin ever find another job? Will romance bloom between these two disparate personalities?
