Plot Synopsis

This four-episode reality series follows Floyd Mayweather, Jr. (40-0, 25 KOs) and "Sugar" Shane Mosley (46-5, 39 KOs) as they prepare for their May 1, 2010 welterweight super fight at the MGM Grand Garden Arena in Las Vegas. After more than a decade -- and their 1999 joint appearance on the cover of "KO Magazine" with the headline "Mayweather vs. Mosley: Who's the Future of Boxing?" -- these two titans finally meet in the ring. Now 39-years-old and with a 15-month layoff, Mosley must endure the toughest training regimen of his career while the 33-year-old Mayweather has his own fitness issues with only one bout (against Juan Manuel Marquez) in the last two-and-a-half years. This match is happening only because the negotiations for a Mayweather-Pacquiao bout fell apart, but the winner will likely cash in with a huge fight against Manny Pacquiao later in the year or early the following year.