In the exclusive town of Rosewood, Pennsylvania, where the sweetest smiles hide the darkest secrets, four pretty little liars - Spencer, Aria, Emily, and Hanna - have been very bad girls ...Spencer stole her sister's boyfriend; Aria is brokenhearted over her English teacher; Emily likes her new friend Maya ...as much more than a friend. And Hanna's obsession with looking flawless is literally making her sick. But the most horrible secret of all is something so scandalous it could destroy their perfect little lives.