Tennis teammates Colin, Ceo, Grahame, and Rhody make a pact to go on a camping trip in Yosemite National Park. The first sign that they should ditch the plan is when Rhody backs out. The next is when Ceo replaces him with Ellie, a girl Grahame and Colin have never even heard of. When there's a forest fire at their intended campsite, they decide to take the treacherous Snow Creek Falls Trail to the top of Yosemite Valley. From there, the bad decisions really pile up. Then one of them doesn't make it back to the tent.