Natalie Chen is visiting her brother when he suggests joining a camping trip in the woods next to their house. Natalie is excited by the idea, while their father reluctantly agrees. As the night darkens and the other campers arrive, she begins to notice something off. Around the campfire, she hears a story about the werewolf that lurks in the woods under the full moon, searching for new victims. In the morning, they look just like a normal human, like anyone else in the group.
Natalie brushes it off at first, but she hears howling on the first night. As the trip progresses, she begins to notice more and more strange occurrences. She wakes up to find the tent slashed and finds claw marks on the trees. And that's before she runs into another family camping in the woods. She begins to wonder who the werewolf is.