Camp Stillwater is about to reopen after being closed down for years. Deb, the new owner, has thrown her heart, soul and life savings into renovating the camp she loved as a child. She isn’t the only one excited to return as six former campers—Alex, Jessie, Cricket, Joel, Blair and Blotter —join her as counselors hoping to experience the freedom that camp brings now that they are older. Not part of the old crew, Amy is not just new to Camp Stillwater, but to camp in general. While Amy tries her best to fit in with the already tight group, Drew is content to be left alone. As everyone settles in and prepares for the campers’ arrival, Amy is the first to get a feeling that something is not right with this idyllic summer camp.

The campers arrive to Camp Stillwater and quickly Alex and Blotter realize one of their new charges, Anton, is going to be a handful. With the tendency to wander off into the woods talking to himself, Alex and Blotter think the shy kid just has an imaginary friend. But when Anton starts talking about “the Tall Man” and communicating cryptic messages to them, they begin to wonder what lurks in the woods around Stillwater. Meanwhile, flashbacks show how Alex got his “if you want something in life, you have to take it” attitude.

What was supposed to be a fun summer that the Camp Stillwater counselors would never forget quickly turned into a horrible experience they will be lucky to survive. As summer comes to a close, the centuries-old battle between good and evil at Lake Stillwater will be settled once and for all.