Jessica accepts an invitation to study at the private and exclusive Amityville Academy. After her induction, she realizes that it's a coven of evil witches trying to summon and unleash the demon Botis in order to spread terror throughout the world.

贾丝和姐姐劳拉一家周末在乡下度假时，被一群当地男子打断，他们意图恐吓她们。劳拉被这群人袭击致死后，贾丝在他们租住的小屋里发现了她毫无生气的尸体。她心中充满了悲伤、愤怒和狂怒，决心不惜一切代价追捕并铲除这伙歹徒，为姐姐的死伸张正义。