 Grant, a philandering accountant, goes to Las Vegas on a business trip and encounters a seductress, Marissa, and her jealous ex-boyfriend Joey.Grant and Marissa incapacitate Joey, believing they have killed him, and decide to bury him along the eponymous Zzyzx Road, a rural road off of Interstate 15 in California's Mojave Desert.After digging a grave, they return to find Joey missing from the trunk of Grant's car.