Stream The Priest's Niece Online Free – Watch Full Movie from Home at 123Movies. . Don Sabino, a priest from the provinces who lives with his niece, Monica. Don Sabino is an arcane priest but his character changes radically when he is with Lucila, a girl whom he and Monica have raised since she was just a baby, when they found her abandoned at the door of their house. Don Sabino is a very helpful priest with his parishioners and life goes on without great upheavals until one day Tomasón appears, fleeing from justice after having committed a murder.