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 coworker 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 turns 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. Hiking in the dark, they must deal with injuries, wild animals, and even a criminal on the lam―before the fire catches them.