Mitchell (Josh Duhamel) and Carter (Dan Fogler), life-long friends, become stranded in the desert while on a road trip. They then start to attack each other's life decisions with unwavering brutality.
Mitchell and Carter never extend beyond the archetypes of Unhappy Family Man and Bitter Failed Artist. Nor do Duhamel and Fogler's inconsistent performances breathe life into their flat characters.
Perhaps even more effectively than The World's End - but in a less escapist fashion - this is a parable of responsibilities and foibles filtered through genre (horror, in this case).