Mia is reluctant to go camping with her boyfriend and sister, who are graduate students working on a dissertation about American folklore. But ultimately, they convince her to help document the trip. The group sets off to Black Creek, a remote destination in the Pacific Northwest where Bigfoot has allegedly been sighted. They think they’re prepared for anything, but their sense of terror grows as they find more and more evidence to suggest the monster really is out there. Eventually, Mia realizes she’ll be lucky just to make it out of the woods alive.