For older friends Roger (Peter Fonda) and Frank (Warren Oates) and their wives (Lara Parker of Dark Shadows and Loretta Swit of M*A*S*H), it had been supposed to be"the best damn vacation they'd had." But a detour that is deadly is taken by their RV road trip in a secluded campsite when they see a orgy and brutal sacrifice. Now terror hits on the highway as the spouses have been chased through a number of the very intense mayhem of the years by blood-crazed cultists and into among the greatest twist endings in drive in history.