Happy British couple Liv and Will seem to have it all. One day, Liv discovers that Will is having an affair. In America they make a big trip, which Liv has been dreaming about since she was little. For Will, it's a chance to make amends. However, Liv sees it as an opportunity to exact deadly revenge. While exploring the American wilderness, where accidents always happen, the couple bumps into Will's co-worker Cara and her boyfriend Garth. It's not long before Liv's plans go haywire.