Natalia is not the kind of girl who takes risks. Six years ago, she barely survived the house fire that killed her baby brother. Now she is cautious and always plays it safe. For months, her friend Wyatt has begged her to come hiking with him, and Natalia finally agrees. But when a wildfire breaks out, blocking the trail back, a perfect sunny day quickly morphs into a nightmare. With no cell service, few supplies, and no clear way out of the burning forest, a group of strangers will have to become allies if they're going to survive.