When an illicit arms deal goes bad, North Korean spy Pyo Jong-seong finds himself targeted not just by the South Koreans but also his own bosses.

During the Japanese colonial era, roughly 400 Korean people, who were forced onto Battleship Island (‘Hashima Island’) to mine for coal, attempt to escape.

Tae-su, a detective fighting organized crime, returns to his hometown for his high school friend Wang-jae's funeral. There, he meets his old friends Pil-ho, Dong-hwan and Seok-hwan and they reminisce. Suspecting something fishy about Wang-jae's death, Tae-su and Seok-hwan start investigating it, each in his own way. Their investigation...

Sang-hwan became a cop in order to help the downtrodden, but he doesn't get much respect. All that changes when he meets the Seven Masters.

Jobless, besieged by creditors, and abandoned by his wife, the once silver medalist Tae-shik has sunk to street hustling, becoming a human punching bag. Meanwhile, young Sang-hwan's delinquent ways land him behind bars. Both men look to boxing to turn around lives gone astray, aiming for the amateur title, ultimately pitting them again...