Camp Stillwater is about to reopen after being closed down for years. Deb (Elizabeth Mitchell), 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 (Ronen Rubinstein), Jessie (Paulina Singer), Cricket (Amber Coney), Joel (Eli Goree), Blair (Mark Indelicato) and Blotter (Zachary Gordon)—join her as counselors hoping to experience the freedom that camp brings now that they are older. Not part of the old crew, Amy (Elizabeth Lail) 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 (Zelda Williams) 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.