It's heartbreaking to see. A generation of godfathers went from having nothing to having friends all over the world, with both family glory and warmth. The life of the second generation godfather was destined to be lonely, and his decision was out of place in the family: the young man dropped out of school to join the army, returned from the army to live an ordinary life, and did not interfere with his father's career. However, the father was killed, the wife was killed, the eldest brother was reckless, and the second brother was cowardly, forcing him to give up his personal dream and take on the family in the face of danger. On this road, he was betrayed by his brother, left by his wife, and hated by his sister, and he remained alone all along. Many scenes in the movie show Al Pacino sitting alone in the corner of the sofa, so hard, lonely, and strong.