Aria, Emily, Hanna and Spencer have made a crucial mistake — they told someone about "A" and now they must pay the price. With the clock ticking and "A" calling the shots, the girls are sent on missions to do "A's" bidding in order to save their trusted confidant. Each mission will ultimately lead to what the four liars want the most, but at a costly price to their loved ones and themselves. Can Aria, Emily, Hanna and Spencer go through with their given tasks in order to save one, or will they ignore "A" to save those around them from being hurt? And ultimately, will this matter when all is said and done? Nothing is ever as it seems in Rosewood, PA.