After wrecking their car in the middle of the desert, two couples find themselves stranded with few supplies. When the heat intensifies and their precious water supply dwindles, the frantic friends begin betraying each other in the hopes of survival. Their civility rapidly deteriorates as they begin to experience overwhelming fear and desperation.

When Kirby Lane's SUV breaks down in the middle of the desert, she must overcome the dehydration, coyotes, and lurking undead to find her way home.