1951. A plane carrying an American general and 40 nuclear technicians makes an emergency landing off the coast of Ireland. When rescuers reach the spot, though, they find nothing - no life rafts, no bodies ... The West cannot afford to leave anyone with knowledge of atomic weapons in enemy hands, so it will be up to Buck and his friends to find the missing men, thanks to an experimental, high-altitude, Mach 3-capable aircraft: the Rapier...