A small-time thug who collects debts for the local triad is torn between his criminal aspirations and his devotion to family.

A group of people whose lives suffer from stagnation, are working together in the same company and their lives are scutinized by those who see them. There is the development manager whose last new idea was five years earlier; a procrastinating office clerk with a crush on a co-worker that he is too shy to reveal; and a senior manager who believes his wife is having an affair causing him to take out his frustration on all his employees.

Yi-su, a 37 year-old professor, can't forget her first love Joon-ho who's missing in action in Vietnam. She meets Hyun-woo one day, who look surprising like Joon-ho. Hyun-woo investigates Yi-su who lives in the past and discovers that her pain stems from the Vietnam war. Hyun-woo can't help falling in love with her even though he's a student. On a trip to Busan, he confesses his love for her. But he soon realizes that the only man for her is Joon-ho. Min-cheol who fought along with Joon-ho sells his belongings to Yi-su at a high price. He tells her that Joon-ho died in a fire and they argue aggressively. Min-cheol commits suicide afterwards and Yi-su is also found dead in the campus pool.

The lives of 4 interconnected South Koreans – a married couple, a novelist the wife is having an affair with, and a second woman the novelist is simultaneously involved with.