Jenna Collins is a girl whose heart has been broken by her self-absorbed boyfriend, Brad. With some convincing from her best friend Emma, Jenna turns to the dark arts to seek revenge. That vengeance comes in the form of Lillith – a murder-hungry siren from hell. Jenna quickly realizes that her new friend Lily is more than what she bargained for. The lust demon embarks on a sex-fueled killing spree with no end in sight. Can Jenna and her friends stop Lillith in time before the entire campus is doomed?