Two French spies, Baron d’Aubigny and Clemence de Montignon, blackmail German engineer Günther Ellinghaus with his gambling debts into handing over his construction plans for the new Ikarus engine. He flees to New York and works as a waiter. When World War I breaks, he signs on as a fireman on a Dutch ship and returns to Europe. He becomes a fighter pilot in Germany and faces the former spies... see more