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 PLLs worry Ali is being tortured by “Uber A” and turn to a potential enemy for help in “Bedlam,” With the fallout of Hanna’s abduction still weighing heavily on the PLLs, the Liars begin to grow suspicious of Elliott Rollins as Ali’s condition worsens. Tensions rise between Liam, Aria and Ezra as they work on the book together. Spencer and Caleb are on edge, as neither of them want to talk about the awkward elephant in the room. Meanwhile, Emily receives a disturbing phone call and tries to find a way to see Ali.
The animal attacks continue and the team discovers that the mutation has advanced further... rendering their cure ineffective. Now with the aid of an anonymous sponsor, the team head to Argentina to meet with a scientist who may have discovered the key to the mutation.
While Jamie tries to make her way to safety, an increasingly desperate Chloe tries to find a cure to the mutation now that one of her teammates is infected.