At the camp, counselors Ned Rubenstein, Jack Burrell, Bill Brown, Marcie Cunningham, Brenda Jones, and Alice Hardy, along with owner Steve Christy, refurbish the cabins and facilities. As a thunderstorm approaches, Steve leaves the campground to stock supplies. Ned sees someone walk into a cabin and follows. While Jack and Marcie have sex in one of the cabin's bunk beds, they are unaware of Ned's body above them, his throat having been slit. When Marcie leaves to use the bathroom, Jack's throat is pierced with an arrow from beneath the bed. The killer follows Marcie into the bathrooms and slams an axe into her face. Brenda hears a voice calling for help and ventures outside to the archery range, where the lights turn on. Later, Steve returns and recognizes the unseen killer, who stabs him.