When Carl, a work-obsessed man reluctantly agrees to a weekend away with his disgruntled wife and disruptive children, a leisurely trip to the country becomes a fight for survival as a convoy of road-weary travellers, confront and force the family off of the road, and then engage them in a series of terrifying mind games in an abandoned roadside diner. Carl watches in desperation as the ones he loves are brutalised and humiliated; will he be able to find a way for them all to escape, or are they destined to disappear without trace?