Mega Air follows the challenging journey of a 55-million-dollar batch of cancer pharmaceuticals, from Northern Ireland to Heathrow, for a flight to the US. An East Midlands Airport wildlife officer gets into a flap trying to scare birds from his runway. Two gigantic stone crushing machines, destined for an African mine, threaten to crush the monster Antonov 124 air freighter. We travel with a pushback driver at one of America's busiest cargo airports.