A group of escaped mental patients crash a suburban sleepover, but realize they picked the wrong house when the girls refuse to go down without a fight. Debbie Dicky's last relationship didn't end well. After accidentally killing her boyfriend, she moved to a new town hoping to get a fresh start. Things start to look up with three local girls invite Debbie over for an epic pajama party, but the good times grind to a halt thanks to a murderous band of mental hospital escapees. Little do those psychos realize that Debbie has some previous experience with a butcher knife, and she's about to make them wish they'd never broken out of their cozy padded cells.