NYPD detectives Christopher Danson (Johnson) and P.K. Highsmith (Jackson) are the baddest and most beloved cops in New York City. They don't get tattoos, other men get tattoos of them. Two desks over and one back, sit detectives Allen Gamble (Ferrell) and Terry Hoitz (Wahlberg). You've seen them in the background of photos of Danson and Highsmith, out of focus and eyes closed. They're not heroes, they're "the other guys." But every cop has his or her day and soon Gamble and Hoitz stumble into a seemingly innocuous case no other detective wants to touch that could turn into NYC's biggest crime. It's the opportunity of their lives, but do these guys have the right stuff?
Maggie, an alluring free spirit who won't let anyone - or anything - tie her down. But she meets her match in Jamie, whose relentless and nearly infallible charm serve him well with the ladies and in the cutthroat world of pharmaceutical sales.
Kyung-chul (Choi Min-sik) is a dangerous psychopath who kills for pleasure. He has committed infernal serial murders in diabolic ways that one cannot even imagine and his victims range from young women to even children.
Cobb, a skilled thief who commits corporate espionage by infiltrating the subconscious of his targets is offered a chance to regain his old life as payment for a task considered to be impossible: "inception", the implantation of another person's idea into a target's subconscious.
As a deadly battle rages over Jigsaw's brutal legacy, a group of Jigsaw survivors gathers to seek the support of self-help guru and fellow survivor Bobby Dagen, a man whose own dark secrets unleash a new wave of terror.