After years of tormenting and numerous shocking revelations, the Liars finally uncovered the true identity of "A" in the summer finale of season six. Now, five years later, the girls have each pursued their own paths and have started adjusting to a life without "A," when something happens in Rosewood that forces them to go back to where it all started. Torn between their old habits and their new lives, the events in Rosewood compel the Liars to join forces once again, as relationships are put to the test and secrets are revealed. Having matured over the past few years, these are not the same girls who left Rosewood. As new lies emerge - how will they push forward without going back?.

Aria, Emily, Hanna and Spencer find themselves back in familiar territory with the Rosewood P.D. knocking at their doors looking for answers and their actions now affecting the loved ones around them. With her mother's job on the line, Hanna tries to come up with an alibi that could save all four of them with the help of her old high school friend, Lucas. Meanwhile, Emily comes clean about the last five years, and Aria goes the extra mile to keep Ezra's second book in play with her boss.