Mystery of The Vanishing Skinny-Dippers

Four teenagers go camping at a secluded spot outside of town, and setup camp near a small lake in the woods. They spot some youth swimming in the lake, near their camp site, and discover that the swimmers are not wearing anything. The nude swimmers see the teens watching them from the shore, and take off across the lake. The two male campers swim after the youth, but find no sign of where the skinny dippers have mysteriously disappeared to. Their camping trip has now developed into a mystery as well, and the four teenagers begin searching for an answer to how and where the skinny dippers vanished. The discoveries that are made are intriguing, and end up changing the way the four teenagers think.