High school seniors Mackenzie, Ava, Julie, Parker, and Caitlin are under investigation for murder -- a murder they didn't commit. Sure, they talked about killing rich bully Nolan Hotchkiss, but they didn't go through with it. It's just a coincidence that Nolan died in exactly the way they planned... right? Except Nolan wasn't the only one they fantasized about killing. Mackenzie is sick of playing second fiddle -- make that second cello -- to her former best friend, Claire. Ava's been pushed around by her evil stepmonster for far too long. Julie's copycat Ashley let the cat out of the bag, revealing the truth about Julie's hoarding mother to the entire school. Parker can't forgive her dad for the scars he left on her. And of all the girls, Caitlin's hatred for Nolan burned the brightest, since he tormented her younger brother to the breaking point. In the wake of Nolan's death, the girls promise not to tell anyone about that fateful discussion in film class. But then someone else on their list dies. As the people on their list keep falling one by one, the girls wonder, Are they being framed? Or are they about to become the killer's next targets?