23 July 1983. It should have been a routine flight for the brand-new, state-of-the-art Canadian Airways Boeing 767, outward bound from Montreal to Edmonton. Experienced pilot Captain Bob Pearson has misgivings about some malfunctioning computer equipment, but it's the airline that now decides if a plane is airworthy, not the pilot. Pearson has no option - he needs his job - so he takes the plane up, together with co-pilot Maurice Quintal, chief engineer Rick Dion and air-hostess Lynn Brown. But Pearson's fears are not misplaced. At 41,000 feet, the warning lights start to flash. Only then does Pearson realise to his horror that his plane is virtually out of fuel. So starts a full-scale emergency with the lives of Pearson's passengers and crew hanging in the balance.