It's hard to believe that the Olympics is upon us once more, as athletes from around the world prepare themselves to compete in the ultimate world games. This new series takes a closer took at some of Ireland's medal hopefuls this year. Tonight, we meet race walker and father of three Rob Heffernan, whose training is interrupted when the recent Russian drugs scandal sees him awarded the 2010 European Championship's bronze medal, while he also discovers he is about to become a dad for the fourth time.