Wildlife film-making is one of the most difficult jobs on earth. Thousands want to do it, but few get the chance. For the first time, the BBC has chosen nine people with ordinary jobs to see if one of them has what it takes to become a wildlife film-maker. Presented by Nick Knowles, Wildest Dreams puts them through their paces in one of the natural world's greatest arenas - Africa - with the ultimate prize for just one of them: a job at the BBC's prestigious Natural History Unit.