Documentary about the development of the Boeing 747 jumbo jet. The 747 was a game changer; the airliner that revolutionised mass, cheap air travel. But the first, wide-bodied plane was (originally) intended as a stopgap to Boeing's now-abandoned supersonic jet. This is the remarkable, untold story of the jumbo, a billion-dollar gamble that pushed 1960s technology to the limits to create the world's most recognisable plane.