Los Angeles, September 1936. Michel Détroyat is invited by the National air Races to compete at the Thompson Trophy which takes place at Los Angeles. His aircraft is a Caudron C-460 with retractable landing gear. The Renault engine is less powerfull than his rivals, but the Caudron is technologically more advanced. It has a variable pitch propeller that gives a better efficiency. To the general surprise, Michel Détroyat wins the pretigious trophy and beats easely his American rivals like Earl Ortman who flies the powerfull yelllow Marcoux Bromberg R3.