Jimmy Christopher — known to a few as Operator 5 of the Secret Service — had forseen the dark day when oil, the black blood of commerce, would be exhausted. Now it was needed desperately to fuel American airplanes, tanks and battleships; it was as essential as men or arms in our battle to the death with a greedy foreign power which had learned our grim secret and was determined to conquer us…
While the forces of defense clamor loudly for oil; while the life of a nation is paralyzed for the lack of it, skilled saboteurs, insidious agents of the enemy wantonly destroy our small, precious remaining store! What strategem — where the leaders of the nation are plunged in despair –can Jimmy Christopher evolve to save his native land from slavery and utter doom?