Third and last entry of the Capt. Nick Jansen trilogy. This time Jansen is a member of the dog squad who fights a gang of drug dealers led by Rolly and Marko. After a raid on a night club he picks up Steve, the little brother of his girlfriend Pat Jackson, who has been given drugs by Marko.

In 1879, during the Anglo-Zulu War, man-of-the-people Lt. Chard and snooty Lt. Bromhead are in charge of defending the isolated and vastly outnumbered Natal outpost of Rorke's Drift from tribal hordes.

A gang of four would-be robbers plans to steal a fortune in currency hidden aboard the "Flying Scotsman" in a railroad stateroom by cutting through the wall of the adjacent stateroom, but find themselves up against numerous unexpected drawbacks, including interference by their fellow passengers.