Long ago, a passage to the spirit world was discovered: the Ouija board. Gods and men traversed the passage, each inhabiting the other's world. The lives of Brian, a commodities broker, and his wife Julie, a teacher, are thrown into chaos when Brian finds he can predict the commodity markets fluctuations using the power of the Ouija board.

An evil spirit enters Brian's body, displacing his soul and causing mayhem and disaster. Julie must summon great courage and daringly retrieves her husband from the clutches of this sinister and arcane power. In the startling and dramatic climax, the young couple find out that their love is the only weapon against the force of evil...