Colonel Warner is in charge of security for Britain’s oil fields in Batum. The big oil tanks begin to catch fire. The Colonel sets Corporal Collins out to investigate. Collins is accompanied on the case by Slapsie. They discover that the oil tanks are nearly empty when they are set on fire.
Slapsie sees a beaten and bedraggled Jim Parker come to the field. Jim is dying from being beaten by Ratzer, yet gives Collins valuable information before he passes. Spapsie and Collins discover a pipeline running under the tankers and tracks it back to the Nazi hideout. Collins bests Ratzner in a fight, but the villain escapes. The Nazi tanker waiting for the oil is captured, and Slapsie takes charge of the Nazi sailors-turned-prisoners.