In Seoul, OH Jung-hyuk, a boxer, working occasionally as a debt collector, is preparing for a fight in the coming days. MOON Sang-min, a young and immature man, try to get money, feeling seriously threatened. WANG Sun-ho, a rich and arrogant young man, contacts his father, a powerful CEO of a big Korean company who categorically refuses to talk to him.

For a paltry sum of money, Jung-hyuk injures himself slightly in the right hand. In tense relationship with his employers, he meets a young woman working in a cafe that intrigues him, reviving the images of a distant memory while Sang-min's problems are growing up.

Sang-min tries to negotiate the payment of his debt he owes to a notorious gangster, Tony. The deadline has already passed but he is trying to get more time. Jung-hyuk has to prove himself in the ring but his right hand hurts.

In the morning, OH Jung-hyuk, finishes a job for Tony but he will learn very bad news. MOON Sang-min, talks to the young woman at the karaoke but then in the street, he goes too far and Wang Sun-ho defends the young woman.

Jung-hyuk meets the waitress of the cafe in a park. Something they cannot define seems to relate them. Sang-min is still struggling to find money without succeeding. Following his meeting, Jung-hyuk's memories become more obsessive.

While Jung-hyuk resists to drink, Sang-min has found refuge with Jae-hwa who ends up betraying him. Park and Kim, Tony's two subordinates are about to get Sang-min, who still hasn't paid. Jung-hyuk arrives at the scene without knowing anything about Sang-min's problem.

Sang-min finds himself trapped. The second deadline of the debt has come to an end. Jung-hyuk discovers Sang-min's troubles and decides to help him. The troubles continue for Jung-hyuk and his addiction reappears, reviving a memory that has haunted him for too long.

Two years earlier, a Jung-hyuk's japanese rival, Hiroshi Ito, was sent to Seoul to do a special work. He will encounter CHOI Sae-mi, a young student pianist who can no longer pay for her studies.

Sae-mi meets Ina, a former classmate who dropped out of school for a lucrative but questionable activity. Hiroshi makes a mistake that could have changed Sae-mi's situation if she hadn't seen Ina again.

An unpleasant surprise awaits Jae-hwa as she returns home. Sang-min finally meets Sae-mi who asks him for help. Jung-hyuk learns from Mr. Park that he will have to fight soon to start paying down the debt.

Jung-hyuk prepares for the fights he must do, supported by the memory of this young woman met at the cafe. The situation is serious. But what solutions are available to him to get out of it? Is this dead end the end of the road?