 Fr. Hugh O Flaherty is a Vatican official in 1943-45 who has been hiding downed pilots, escaped prisoners of war, and Italian resistance families. His diplomatic status in a Catholic country prevents Colonel Kappler from openly arresting him, but O Flaherty s activities become so large that the Nazi s decide to assassinate him the next time he leaves the Vatican. O Flaherty continues his work in a variety of disguises. Based on a true story.