In 1967 Los Angeles a widowed mother and her two daughters add a new stunt to bolster their seance scam business and unwittingly invite authentic evil into their home. When the youngest daughter is overtaken by the merciless spirit, this small family confronts unthinkable fears to save her and send her possessor back to the other side.

After a mysterious, lost night on their honeymoon, a newlywed couple finds themselves dealing with an earlier-than-planned pregnancy. While recording everything for posterity, the husband begins to notice odd behavior in his wife that they initially write off to nerves, but, as the months pass, it becomes evident that the dark changes to her body and mind have a much more sinister origin.

When all the children in a small religious town disappear, panic spreads quickly. But when the children finally return, they begin attacking the parents, and it becomes clear that they are possessed by a demon. The town is forced into a desperate and violent campaign to eliminate the possessed children, but one mother refuses to believe that her daughter is lost to the devil and will do whatever it takes to keep her alive, and save her from the demon...