The priest Angel Berriatúa, professor of the University of Deusto, has spent the last twenty-five years of his life studying the Apocalypse of San Juan. Finally he has reached a conclusion: The Antichrist will be born in Madrid on December 25, 1995, before dawn. To get in touch with the Evil One, he decides to arm himself to the teeth and start an improvised criminal career. There is no time to lose. The priest Berriatúa and his eccentric companions launch without reservation to a fascinating adventure full of surprises, to protect an endangered species: El Hombre.