An aging rock star decides to change his life when he discovers a 40-year-old letter written to him by John Lennon.

The aging patriarch of an organized crime dynasty in postwar New York City transfers control of his clandestine empire to his reluctant youngest son.

Follows Michael Corleone, now in his 60s, as he seeks to free his family from crime and find a suitable successor to his empire.

The early life and career of Vito Corleone in 1920s New York City is portrayed, while his son, Michael, expands and tightens his grip on the family crime syndicate.