Kim Hyuk lives a fast life as a high-ranking mobster in the port city of Busan, South Korea. His closest friend is fellow mobster Lee Young Choon. Even though Kim Hyuk seems to be on top of the world, he is haunted by the memory of leaving behind his younger brother, Kim Chul, and mother as they attempted to flee into South Korea from North Korea. Kim Hyuk's mother was beaten to death, and Kim Chul was imprisoned after they were caught by North Korean authorities.
Kim Hyuk then travels to Thailand with new gang recruit Jung Tae Min for a meeting with Thai gangsters. The meeting turns out to be a set-up, planned in part by Jung Tae Min. Kim Hyuk is able to shoot his way out of the meeting, but he is later caught by the Thai police and imprisoned. When good friend Lee Young Choon hears of what happened to Kim Hyuk in Thailand, he goes to the Thai gang's holdout in Pusan to kill their boss. During the shootout, Jung Tae Min is shot in the leg.
Three years later, Kim Hyuk is finally released from prison and travels back to Busan. He finds his close friend Lee Young Choon washing cars now and has a limp leg. Jung Tae Min, the man that betrayed him, has climbed up the mob ranks and is now a feared crime boss. Furthermore, Kim Hyuk's younger brother Kim Chul has arrived in Busan and works for the Busan Police Department. Meanwhile, Kim Chul keeps close tabs on Jung Tae Min as he attempts to take down their gang.
When Jung Tae Min attempts to take out Kim Hyuk's younger brother, Kim Hyuk throws himself back into the gang world to exact revenge.
Kim Hyuk then travels to Thailand with new gang recruit Jung Tae Min for a meeting with Thai gangsters. The meeting turns out to be a set-up, planned in part by Jung Tae Min. Kim Hyuk is able to shoot his way out of the meeting, but he is later caught by the Thai police and imprisoned. When good friend Lee Young Choon hears of what happened to Kim Hyuk in Thailand, he goes to the Thai gang's holdout in Pusan to kill their boss. During the shootout, Jung Tae Min is shot in the leg.
Three years later, Kim Hyuk is finally released from prison and travels back to Busan. He finds his close friend Lee Young Choon washing cars now and has a limp leg. Jung Tae Min, the man that betrayed him, has climbed up the mob ranks and is now a feared crime boss. Furthermore, Kim Hyuk's younger brother Kim Chul has arrived in Busan and works for the Busan Police Department. Meanwhile, Kim Chul keeps close tabs on Jung Tae Min as he attempts to take down their gang.
When Jung Tae Min attempts to take out Kim Hyuk's younger brother, Kim Hyuk throws himself back into the gang world to exact revenge.
The story will focus on a love triangle between the three leads. Eikura plays the role of Morimoto Naoko, a girl from the countryside whose first love is her uncle, Ikezawa Masato. She follows after him to Tokyo by getting admitted into an elite medical university, but there she runs into Masato's girlfriend and colleague Aya, a beautiful and intelligent researcher who is the daughter of the university hospital's director. However, things get complicated after Naoko and Masato meet again.
A housewife becomes enraged with jealousy over her husband's affair. Meanwhile, their son sits in the periphery, observing their violent confrontations. One evening, the housewife takes a kitchen knife into their bedroom to exact revenge on the father. The father though is able to repel her attack and throws her out of the bedroom. The mother then goes into the son's room and from there it hovers the family into tragedy.
20-year old Deok Yi’s quiet small-town life gets exciting when a former University Professor, Hak Kyu, moves in, running from the scandal of a sexual harassment allegation. He works as a literature instructor at a culture center and she works at an old amusement park. Mutual attraction leads the pair into a lusty affair, but when the fall semester begins, Hak Kyu is reinstated at the university and returns to his family in Seoul, leaving Deok Yi behind. She refuses to let the relationship die, and a confrontation between them turns tragic when Hak Kyu’s wife commits suicide. 8 years later, Hak Kyu is a popular writer, but he is barely able to see, losing his eyesight to a disease, and he's estranged from his daughter Cheong, who blames him for her mother's death. At this time, he befriends Se-Jung, a new neighbor who moves in next door. He gladly accepts her help and Cheong becomes romantically attached to her, neither realizing she is in fact Deok Yi, the woman Hak Kyu betrayed 8 years ago, now on a quest to destroy them. Her plan sets off a vengeance-fuelled chain of events that ultimately sets the three bitter, angry and desperate schemers on a twisting collision course with each other.
Having lost her mother at a young age, Chisato grew up with her father. She married her university classmate Mayama Yuta, who is now the heir to a large company, and was meant to lead a happy married life, but instead finds herself treated like a “housekeeper” by both Yuta and her parents-in-law. Then, one day, she witnesses her husband walking affectionately with a young woman, Mitsui Runa. When finding out he betrayed her, she explodes with anger at Yuta, but a struggle with Yuta leads to her getting hit by a car. When Chisato awakens in the hospital, she discovers she’s actually been reincarnated as Runa, and thus, she vows to dedicate her new life to getting revenge on Yuta.
Former national swimmer Cheon Soo dreams of traveling to Palau, and to fund his trip he works as a swimming instructor by day while gambling at night. However, after losing a game of poker he finds himself heavily in debt and in trouble with the loan sharks. Kang, the head of a local drug syndicate, offers to pay off Cheon Soo's debts; in return, Cheon Soo must work as a "marine boy", a mule who smuggles drugs across the open waters.
Knowing the danger he faces, Cheon Soo tries to make a run for it, but he is arrested at the airport by police detective Kim Gae Ko. Detective Kim is intent on capturing Kang and faced with no other choice, Cheon Soo agrees to work as a spy on his behalf. His situation becomes further complicated when he falls for Yu Ri, a jazz singer under Kang's charge and the daughter of Kang's best friend. But Yu Ri suspects Kang of killing her father, and she and Cheon Soo plot to take the drug money for themselves.
Knowing the danger he faces, Cheon Soo tries to make a run for it, but he is arrested at the airport by police detective Kim Gae Ko. Detective Kim is intent on capturing Kang and faced with no other choice, Cheon Soo agrees to work as a spy on his behalf. His situation becomes further complicated when he falls for Yu Ri, a jazz singer under Kang's charge and the daughter of Kang's best friend. But Yu Ri suspects Kang of killing her father, and she and Cheon Soo plot to take the drug money for themselves.
