Hong Nan Hee is an ordinary worker at a publishing firm. She's a girl who always falls in and out of love ever since she was young. Nan Hee has a best friend in her former classmate & childhood friend, Byun Hyung Tae, who has always been there for her through her ups-and-downs and relationship breakups.
After a particularly bad breakup with her much-younger boyfriend, Nan Hee moves into Hyung Tae's apartment
