When aspiring Hollywood star Jackson Axelrod gets an offer to be the spokesman for a new national park, he recruits a group of old friends for a nostalgic camping trip. Members of the group clash with each other right away, and just as their conflicts start heating up, it turns out that the supposed national park is home to a band of psychotic activists in creepy animal masks who hunt humans for sport with assault rifles. Right away, people start dying, and the campers come to realize that they'll have to put their differences aside and work together if they want to escape from the masked hunters and get out of the woods.