Little Mac: A 17-year-old fighter from the Bronx in New York. He loves nothing better than a tough challenge.

Doc Louis: An ex-heavyweight who was a famous hard hitter in the U.S. around 1954.

It all began one day when Little Mac and Doc Louis met by chance. Doc became Mac's trainer, teaching him everything there is to know about boxing. Doc and Mac's story continues over a seemingly endless path, until one day a champion is born.