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.
Still reeling from the trauma of Hanna’s abduction and dark fate, the Liars must shift their focus to another one of their own. In order to protect Alison from Uber A’s threats, the PLLs snap into action at a chance to rescue her from the hospital. However, in doing so, they make a deadly mistake that changes everything.
Emma starts to question her friendships when tensions rise between her and her friends. Meanwhile, Noah reveals his latest theory about the identity of Piper's accomplice. Noah takes his investigations further.
After tragedy strikes their only ally within the government, the team is left on their own to stop a surge of animal-related attacks from destroying the city of Geneva, Switzerland. Also, new team member Dariela makes a shocking discovery about General Davies, head of the Noah Objective, and in the Canadian wilderness, Jamie witnesses the animals’ broadening effect on the environment and uncovers a troubling detail about Logan.