Public Enemy Returns(2008)

Only the strong survives.

Public Enemy Returns is a Korean crime thriller following Detective Kang Chul-jung, a veteran investigator with 15 years on the force. When a ruthless mob boss begins exploiting children as pawns in his criminal empire, Chul-jung must confront a new breed of organized crime that targets the city's most vulnerable. The film explores the moral weight of policing in a system where innocence itself becomes a weapon, pitting an aging cop's experience against an enemy willing to sacrifice youth for profit. Dark and gritty, Public Enemy Returns examines corruption at its most cynical while following one detective's determination to protect those who cannot protect themselves.