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On their cross-country drive, a married couple, Jeff and Amy Taylor, experience car trouble after their SUV breaks down. Stranded in the New Mexico desert, the two catch a break when a passing truck driver offers Amy a ride to a nearby café to call for help. Meanwhile, Jeff is able to fix the car and make his way to the café, but Amy isn't there. He tracks down the trucker ― who tells the police he's never seen Jeff or his wife before. Jeff then begins a desperate, frenzied search for Amy.