Ellen hopes to ski and put some spark into her dull marriage to Stu, an efficiency author, while at Lake Tahoe in a rustic cabin owned by Stu's publisher. They are startled when a horror author and his sexy wife also arrive at the apparently double-booked cabin. The women immediately bond but the men squabble like spoiled two-year-olds and devise several wagers to determine who stays and who goes. Before anyone can leave, a police officer reports...