Determined to commit as many sins as possible to avert the birth of the beast and the end of the world, dedicated Catholic priest Father Ángel Berriartúa heads to Madrid after deciphering the code behind Saint John's cryptic Book of Revelation. Because, according to his calculations, optimistic estimates based on a numerical transcription of the Apocalypse, the dark event will occur somewhere in the Spanish capital on Christmas Day. But time is slipping away from the ambitious cleric, who still needs to identify the beast's exact birthplace. As Father Berriartúa thinks outside the box, he soon teams up with two unlikely defenders: José María, an enthusiastic Black Metal aficionado, and Professor Caván, an Italian TV show host and connoisseur of the occult. Like it or not, Ángel must become an unrelenting sinner to foil the arch-enemy's plans. But is there a glimmer of hope for humankind?
—Nick Riganas