Recovering from the psychological effects of witnessing a brutal crime, FBI agent Jake Malloy (Sylvester Stallone) checks into a rehabilitation clinic for police officers. There, stripped of their defences-including badges and weapons, they can dry out and begin to face their futures. But the therapeutic sanctuary soon becomes a nightmarish prison. When a major snowstorm cuts off the clinic from any communication to the outside world and the patients begin to turn up dead amidst suspicious circumstances, it becomes clear that there is indeed a killer among them, and any one of them could be the next victim.