On their way to a boxing match, Frank & John Wyatt and their friends get off the expressway in the worst part of town to avoid a traffic jam. But they're definitely not in Kansas any more when they cross paths with a psychotic drug lord, Fallon, who kills one of his subordinates right before their eyes--and wants no witnesses. Soon, an innocent evening's fun has turned into a deadly, nail-biting game of cat and mouse through Chicago's asphalt jungle, as each layer of civilization is stripped away and they must rely on their animal instincts, and each other, to survive judgment night.