Jack Mann is a writer reporter for the Associated Press. Annalisse Summer is an ER nurse dedicated to help people: Dr Linus is a doctor who has seen what Jack and Analisse have: an evil entity that seeks to destroy and has joined them to help stop it (the entity posses people and controls them to do its bidding).

A young couple struggling with infertility seeks the aide of a healer with a promised remedy, while unknown forces also work to provide them with what they wish.