The first film introduces the Corleone family, an Italian-American Mafia family, and their rise to power. The story revolves around Don Vito Corleone (Marlon Brando), the head of the family, who is aging and must soon choose a successor. The film follows the transformation of Michael Corleone (Al Pacino), initially an outsider who is reluctantly drawn into the family business, from a war hero to a ruthless mafia boss. The Godfather was critically acclaimed for its innovative cinematography, editing, and its portrayal of the mafia lifestyle, setting new standards in filmmaking.