The business tycoon Nicolas Saccard is nearly ruined by his rival Gunderman, when he tries to raise capital for his company. To push up the price of his stock, Saccard plans a publicity stunt involving the aviator Jacques Hamelin flying across the Atlantic to Guyana and drilling for oil there, much to the dismay of Hamelin's wife Line. While Hamelin is away, Saccard tries to seduce Line. Line finally realizes that she and her husband were pawns in Saccard's scheme, and she accuses him of stock fraud.