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Soo-hyun comes across magical pills that allow him to go back and forth in time. 30 years to the past, young Soo-hyun meets future Soo-hyun and learns that his girlfriend will soon die because of him. In order to save her, the two Soo-hyuns try to change the past together, but a completely new and unexpected past is formed that leads to a new future.

The hungry friends in a poor village of Ami-dong have nothing but their fists and like to battle in other neighborhoods every day. In order to eat until they feel full, they start boxing with a dream to become the world champion. But one friend pursuing his dream of being the world champion by enduring hard training becomes a gang member of the dark world and another friend dreaming of being a prosecutor lives as an ordinary citizen after barely passing the 9th grade civil service exam. Joy, anger, sorrow and pleasure of the people living in mud huts between the tombs with the tombstones of the cemetery as the foundation stones in Ami-dong, Seo-gu, Busan, the city where the refugees from the Korean war gathered.

Despite their different family backgrounds, four friends grew up together in the wearisome years of the 70s. But as time goes by, each of them takes a different life path.

This true story retells the incredible tale of the 2012 National High School Basketball Championship, in which a new coach and six players from the weakest basketball team ran nonstop for eight days.

Jjang-gu joins "Monster," a violent organization at his high school. As a rite of passage, he learns a lesson about being a man while following the course.

When an earthquake hits a Korean village housing a run-down nuclear power plant, a man risks his life to save the country from imminent disaster.

Major crimes unit detective Seong-jin arrests Tae-sung for petty crimes, but shocked to find out that he is the notorious serial killer. However, Seong-jin becomes doubtful of his identity as the serial murder case is investigated.

Kang-soo is a third-rate street thug in Busan; he's an alcoholic and gambling addict who's always on the run from loan sharks. But when his rebellious teenage son Jong-chul is diagnosed with kidney cancer, he tries to be a real parent for the first time and seeks out Jong-chul's biological father, Tae-suk, a pimp. Tae-suk, however, refuses to help.

A couple of smugglers don't know what to do when one day their boss gives them a kidnapping job.

Dae-gil has been skilled with his hands and has shown a strong desire for winning ever since he was a child. He will succeed his uncle and jump into the world of Tazza, risking his life in competition.

Hae-woong, an assembly member candidate, is taken out of the running because he became a thorn in the side of a local bigwig, Sun-tae. Hounded by loan sharks, due to defaulting a campaign loan, he decides to get his hands dirty. He steals classified government’s information about an urban development plan and obtains the help of a local gang leader, Pil-do, by promising hefty real estate profit. Now Hae-woong re-enters the race and tries to take revenge on Sun-tae. Unbeknownst to him, his messy journey through politics has only just begun.