My Bloody Wedding

Doug, an awkward young man who is very attached to his mother, is on the verge of marrying his stunning fiancée, Callista. However, he starts to notice some strange behavior in her. He sees her sneaking out at night and lying to him, and she starts showing signs of illness similar to the flu. Doug assumes she has contracted a disease from being unfaithful. In truth, Callista has been possessed by an ancient stone, leading her to secretly consume his friends and family.