Unsuspecting RV owners who are camping in Texas stumble onto a hideous sacrificial ceremony and lose one of their own before they escape the gang of devil-worshipping bikers led by the sinister Jefe (Miguel Ferrer). Fleeing to a ghost town complete with its own lethal curse, the hapless vacationers find themselves trapped in an epic struggle between good and evil with other players that include an exceedingly odd boy and a possessed preacher.