It’s the smallest and most mysterious army in the world: the Pontifical Swiss Guard. The film accompanies these men of faith and combat, from their recruitment in Switzerland to their military training in the heart of the Vatican. Made up of 150 men, this elite corps lives in barracks in the heart of Vatican City. All must be Swiss nationals and devout Catholics. All have sworn to fight to the death to protect their faith and the Holy Father. They are heirs to a 500-year-old tradition in which the Pope’s protection and security were assured by mercenaries from Switzerland.