"The policewoman got shot, and she's bleeding everywhere. Get someone here in one hour, or I'm going to put her out of her misery." An ultimatum that forever changes the lives of police officer Sam Lucas and Dr. Kate Myles. When heavy snowfall isolates the small English village of Birchenlow, a violent robbery shatters the community. Taken as a hostage and stranded with the increasingly desperate criminals, Sam is seriously injured during an ill-fated escape attempt.