100 individuals enjoy a sport which is so dangerous, most of the rest of the world would never try it. It is BASE jumping and to qualify for this elite circle, first you must jump off four types of object: a building, an antenna, a bridge or span and a mountain. Rob is an instructor and a scaffolder by trade. He often jimps with his friend Jon yet he is also instructing Dave. Ironically Dave is a qualified sky diving instructor yet in BASE terms, he's a novice. Posing as city types, Rob and John go to the bar at the top of the Park Lane Hilton, a place that is already the scene of a BASE jumping fatality. They resolve to jump at 5am. Greg is the seasoned Aussie BASE jumper.