A computer hacker penetrates Vatican security and sends an urgent anonymous plea to the pope. Handsome Father Quart, of the church's Institute of External Affairs, an arm of the Vatican intelligence, is dispatched to investigate. The message of the hacker concerns a crumbling 17th century Baroque church in the heart of Seville that apparently "kills to defend itself".

Toby, a cynical film director finds himself trapped in the outrageous delusions of an old Spanish shoe-maker who believes himself to be Don Quixote. In the course of their comic and increasingly surreal adventures, Toby is forced to confront the tragic repercussions of a film he made in his idealistic youth.