A family dog named Enzo narrates the story of his owner Denny, an aspiring racing driver, as he navigates marriage, fatherhood, personal tragedy and a bitter legal battle over custody of his young daughter. Drawing on his deep understanding of human nature and his passion for watching motorsport on television, Enzo reflects philosophically on life, loss and loyalty. The film is told entirely from the dog's perspective as he approaches the end of his own life.