Following in the same vein as such classics as Rosemary's Baby and The Omen, The Calling is the story of Kristie St. Clair, the involuntary mother of the Antichrist, and possibly the only person who can stop the coming of a modern-day apocalypse.
At first Kristie (Harris) believes that she has the perfect life: Marc (Lintern), her charming TV personality husband; Dylan (Alex Roe), her beautiful young son; an enchanting house in the British countryside; a successful new career... But as time goes by she begins to suspect something's not right with her family.
First, there's Dylan's increasingly violent behavior, which includes the impaling of his pet guinea pig on a stake and his apathy towards the death of a friend. Kristie cannot understand how her son, who she had focused so much energy and love on since he was born, could have turned out so heartless. Then there's the fact that Elizabeth (Krige), an old family friend, seems to be trying her hardest to replace Kristie and keep her away from Marc and Dylan as often as possible. Marc himself begins acting strangely, overreacting after a dog bite and hanging the dog in the backyard as punishment.
It becomes apparent to Kristie that something is very, very wrong, and that she is out of the loop. As her family withdraws further and further from her and she loses her best friend, Kristie turns to a mysterious taxi driver who seems to know a whole lot about everything. All Kristie wants is to save her son, even if it turns out that it is the Devil himself who is standing in her way.
With the help of the taxi driver, Kristie makes some shocking discoveries about her loved ones and comes to the conclusion that unless she stops him, Dylan will lead mankind into a horrifically malevolent future.
At the end, Kristie, who has now stopped caring for Dylan, escapes the hospital with Father Mullin and tells him it was a new time. Father Mullin rips off his white collar tab and throws it out the window as they drive away.
