With Ali now back in Rosewood, she attempts to regain the role of leader of the group, but she finds her four friends are not as willing to blindly follow her every whim as they once were. Besides feeling the pressure from Alison, Aria, Emily, Hanna and Spencer are also feeling under the microscope at school with the high school focusing their attention on the Liars. While most kids are morbidly curious about what happened to Ali, some are more focused on planning for Ali's return to school. Meanwhile, Aria's depression continues to spiral, and she looks for comfort from an unlikely source.
Never trust a pretty girl with an ugly secret. Gossip thrives amid the Mercedes-Benz, mega mansions, and perfectly manicured hedges in the exclusive town of Rosewood, Pennsylvania. Everyone has something to hide. Based off the book series of the same name, the series follows four estranged best friends Spencer, Hanna, Aria, and Emily who are reunited after their best friend and queen bee of the group, Alison, goes missing only to discover they are receiving messages from an anonymous "A" who knows all their secrets.