Former assassin Hutch Mansell takes his family on a nostalgic vacation to a small-town theme park, only to be pulled back into violence when they clash with a corrupt operator, a crooked sheriff, and a ruthless crime boss.
Tired of the crime overrunning the streets of Boston, Irish Catholic twin brothers Conner and Murphy are inspired by their faith to cleanse their hometown of evil with their own brand of zealous vigilante justice. As they hunt down and kill one notorious gangster after another, they become controversial folk heroes in the community. But Paul Smecker, an eccentric FBI agent, is fast closing in on their blood-soaked trail.