An intriguing riddle from -A has the Liars hitting the road and heading to Ravenswood, where they are surrounded by some familiar faces. During a very special magic show, one Liar pulls a disappearing act, leaving the other three scrambling to make sure she hasn’t succumbed to -A’s tricks.
But before they can hightail it out of Ravenswood, they make a shocking discovery that proves that everything they thought they knew about -A and the -A team might be wrong. With this discovery, the Liars may just have started ‘World War A.’
Meanwhile, Hanna and her mother’s joyous reunion is cut short when -A’s sights are set on a new target. And Toby uncovers some surprising information about Wren.

Rush decisions are made when dealing with a wounded heart. When dealing with matters of heart, people react in many different ways: still crushed over her break-up, Spencer continues her downward spiral as she now takes her anger and hurt out on Mona. Caleb, on the other hand, hides his pain by being closed off when discussing his father. But when Hanna devises a plan to bring father and son back together, will that help Caleb heal old wounds or just make things harder? And Aria, who is still missing Ezra, finds herself spending more and more time with Wes.

Meanwhile, Emily and Jason work together to put together the pieces of Ali's trip to Cape May and what really happen during that vacation.