The book includes three novellas set in the area of Point Station, an English outpost near the Waziri lands of the (fictional) Bolongo River basin during the period 1936–1939, in the run-up to World War II, each involving interlopers intruding on Tazan's African domain, and how he deals with them. The first concerns agents of a pharmaceutical company seeking resources assumed to prolong life, the second intertribal warfare involving archaeologists, and the third Nazi invaders.