The film is set in a closed-down department store, which becomes the venue for a wild Halloween party. The morning after, a woman named Eva (dressed in a jewel thief costume) wakes up to discover that all the other party guests have been brutally murdered. Possessing psychic abilities, she uses her gift to retrace the final moments of the victims, reliving their terrifying encounters with a large, vicious killer who murdered everyone else at the party. As she pieces together the events, she uncovers the horrifying truth behind the massacre.