Amelia Fletcher is a good girl. She's a straight-A student, second chair in her middle-school chorus, and she never uses the Lord's name in vain. But a few days ago, she discovered that her dad has been cheating on her mom. For the first time in her life, Amelia decides she would like to know what it feels like to be a bad girl. For just one night. With the help of her BFFs, Cassie and Folline, she plans to teach Dad's "other woman" a lesson. It's harmless fun, right? An evening of teenage mischief. When all is said and done, the homewrecker will go away and never come back. Only then can Amelia's family begin to repair what has been broken. However, this was no ordinary affair. And the trio could never expect the horrors that await them inside the house on Callaghan Drive.