Former Los Angeles cop Kline (Josh Hartnett) accepts a job searching for the son of a prominent businessman in the Philippines after gunning down a serial killer in the line of duty, and finding it impossible to put the incident behind him. Following his leads to Hong Kong, Kline discovers that the boy has decided to cut himself off from society while becoming embroiled in an increasingly explosive street war between the mafia and the police. ~ Jason Buchanan, Rovi