The son of poor Italian immigrants, with short arms and stubby legs, Rocky Marciano accomplished a feat that eluded legendary heavyweight champions like Joe Louis, Jack Dempsey, Muhammad Ali, and Mike Tyson: He never lost a professional fight. His record was a perfect 49-0. Unbeaten is the story of this remarkable champion who overcame injury, doubt, and the schemes of corrupt promoters to win the title in a bloody and epic battle with Jersey Joe Walcott in 1952. Rocky packed a devastating punch with an innocent nickname, "Suzie Q," against which there was no defense. As the champ, he came to know presidents and movie stars - and the organized crime figures who dominated the sport, much to his growing disgust. He may have "stood out in boxing like a rose in a garbage dump," as one sportswriter said, but he also fought his own private demons.