When Ryan and Tessa Monroe perish in their home's blazing inferno their three sons, long estranged from each other, return to Tucson for the funeral. Differences continue to divide them until two spent bullets, revealed in the hand of the undertaker, brings them to the shocking realization that their parents were murdered and the fire set to cover it. While the brothers search for who would murder two beloved, elderly store owners, a long-buried history emerges painting a picture of a past they never knew existed; a past that boils down to one man and his obsession for revenge. During their hunt for the murderer, the brothers come to realize that blood is thicker than the petty differences that have divided their past as the quest for the justice owed their parents rebuilds the bonds between them.