Diarmaid MacCulloch traces the growth of an exuberant expression of faith that has spread across the globe - Evangelical Protestantism. Today, it is associated with conservative politics, but the whole story is distinctly more unexpected. It is easily forgotten that the evangelical explosion has been driven by a concern for social justice and the claim that one could stand in a direct emotional relationship with God. It allowed the Protestant faith to burst its boundaries from its homeland in Europe. In America, its preachers marketed Christianity with all the flair and swashbuckling enterprise of American commerce. In Africa, it converted much of the continent by adapting to local traditions, and now it is expanding into Asia. But is Korean Pentecostalism and its message of prosperity in the here and now an adaptation too far?

Diarmaid MacCulloch's own life story makes him a symbol of a distinctive feature about Western Christianity - scepticism, a tendency to doubt which has transformed both Western culture and Christianity. In the final programme in the series, he asks where that change came from. He challenges the simplistic notion that faith in Christianity has steadily ebbed away before the relentless advance of science, reason and progress, and shows instead how the tide of faith perversely flows back in. Despite the attacks of Newton, Voltaire, the French Revolutionaries and Darwin, Christianity has shown a remarkable resilience. The greatest damage to Christianity was actually inflicted to its moral credibility by the two great wars of the 20th century and by its entanglement with Fascism and Nazism. And yet it is during crisis that the Church has rediscovered deep and enduring truths about itself, which may even be a clue to its future.

Ma Anand Sheela and several other followers recount their experiences of moving to the ranch and the hostility from the residents of the city of Antelope. With the help of architects, engineers, city planners and commune residents, Rajneeshees construct a town called Rajneeshpuram. The commune decides to become self-governing which would allow them to issue their own building permits and have separate law enforcement.
Locals describe their mistrust towards Bhagwan. The American press begins to affiliate Rajneeshpuram with the Jonestown Massacre and paints Bhagwan as an antichrist. The group '1000 Friends of Oregon' initiates a court case to have the buildings of Rajneeshpuram destroyed. In response, Sheela begins buying up available properties in Antelope.

Ma Anand Sheela emerges as a provocative spokeswoman. The Rajneesh control Antelope city council and they establish a police force in the city. Bhagwan tells Sheela it is time to control Wasco County. As Election Day approaches, the Rajneeshees recruit thousands of homeless people to fortify their ranks.

The U.S. authorities granted Bhagwan's visa as a religious teacher and leader. But local officials try to build a case against the Rajneeshees with the largest immigration fraud in the history of the United States. When Sheela's thirst for power, even with murder attempts, is revealed, the Bhagwan finally breaks his silence.

The bitter feud between Sheela and the Bhagwan divides the community -- and opens the door for the FBI. At the ranch, a task force amasses evidences against the Rajineesh for poisoning, attempted murder, spying and sabotage. Sheela's replacement is a wealthy movie producer named Hasya.