A young undercover cop fights to control a constantly changing reality while trying to maintain her own grip on sanity when she joins the hunt for a brutal serial killer.

The rumored daughter of Sarah Good, the first witch to be tried and hung during the Salem Witch trials, lives and commands the spirit world at her fingertips. Irene, as she is known, must sacrifice the lives of a small group of youths every 30 years for preserving her own youthful appearance, powers and prosperity. On this day, Irene sets the bait for Dalton, an unassuming young man looking for closure in his brother's accidental death. She promises Dalton the allure of reconnecting with his deceased sibling while suggesting he bring his friends along for the show. Sam, Dalton's closest friend, ignores the warning signs, tags along for the ride and finds herself the only person left alive after a night of gruesome events.

Three college friends hit the biggest party of the year, where a mysterious phenomenon disrupts the night, quickly descending into a chaos that challenges their friendships - and whether they can stay alive.