A look at the hidden world of the skies above us and the stories of the people who spend their life in flight. Racing champion Martin is preparing to compete for the Schneider Trophy, where 14 pilots will fly wing to wing around outlying islands in Alderney in the Channel Islands. Cargo pilot Mark flies solo from the Isle of Man to Dublin to East Midlands daily in his Piper Navajo plane, delivering anything from fresh flowers to human remains. His schedule is so tight that even during bad weather he must cross the Irish sea. East Midlands Airport is the cargo hub that connects the whole of Britain to the world beyond. A hundred and fifty thousand parcels run through DHL's warehouse each night. Graham, a senior sorter, must make sure his team can respond when a crucial conveyor belt breaks down, while senior loader Tony works against the clock to load thousands of parcels onto cargo flights. At NATS, bad weather grounds planes and dangerous wind sheer causes pilots to abort landings.