When high school senior Maddy falls in love with a college frat guy, her overprotective mom strongly disapproves. Followed everywhere, Maddy realizes her own mother is a deranged stalker with a twisted desire to kill the guy. After a fierce argument, Maddy's new boyfriend is found murdered. Police suspect Maddy is the killer -- but Maddy is certain her mother did it. Maddy flees from the cops, embarking on a secret mission to prove her mom's guilt.