A bomb rocks West Hollywood. And with that, LA joins the brotherhood of American cities hammered by the harsh fist of terrorism. A dozen murdered and numerous injured, including Frank Grace, a cop with a checkered past who once again is at the wrong place at the wrong time.

While recuperating, Detective Grace is handpicked by the police chief to do whatever necessary, legal or not, to swiftly apprehend the perpetrators. Chief Kent refuses to stand by while his city burns and his legacy is tarnished amidst the growing rage and prejudicial violence spreading across Los Angeles.