Father Quixote, a parish priest in the little town of El Toboso in Spain's La Mancharegion, regards himself as a descendant of Cervantes' character of the same name, even if people point out to him that Don Quixote was a fictitious character. One day, he helps and gives food to a mysterious Italian bishop whose car has broken down. Shortly afterwards, he is given the title of monsignor by the Pope, much to the surprise of his bishop who looks upon Father Quixote's activities rather with suspicion. He urges the priest to take a holiday, and so Quixote embarks upon a voyage through Spain with his old Seat 600 called "Rocinante" and in the company of the Communist ex-mayor of El Toboso. In the subsequent course of events, Quixote and his companion have all sorts of funny and moving adventures along the lines of his ancestor's on their way through post-Franco Spain. They encounter the contemporary equivalents of the windmills, are confronted with holy and not-so-holy places and with sinners of all sorts. In their dialogues about Catholicism and Communism, the two men are brought closer, start to appreciate each other better but also to question their own beliefs. Quixote is briefly taken back to El Toboso, confronted by the bishop about his doings and suspended from service as a priest, but he escapes and sets out again with Sancho. In his last adventure, Father Quixote is struck down and wounded while attempting to save a statue of the Virgin Mary from hypocrites who are desecrating her by offering her up for money. This is the scene from the original Cervantes' novel refurbished with reversed accents: Quixote does know Who the Lady is, while the people in the procession actually don't. Quixote and Sancho are brought to a Trappist monastery where, sleepwalking and in delirium, Father Quixote rises from his bed at night, goes to the church, celebrates the old Tridentine Mass—all the time imagining he holds bread and wine in his hands—and then, in a last effort, administers communion to the Communist ex-mayor before sinking dead into his friend's arms.
In 1985, Greene and Christopher Neame adapted Monsignor Quixote as a television film starring Alec Guinness and Leo McKern, as well as featuring several other notable actors including Ian Richardson and Graham Crowden. Richardson and Crowden have also appeared in other versions of the Quixote story – Richardson in Man of La Mancha, and Crowden in the 2000 made-for-TV version of Don Quixote, starring John Lithgow.
