The introduction immediately clarifies the issue by identifying the Australis Suckola as 'a most extraordinary species of Australian gum nut (that) cavorts up, down and around on the big gums growing along the great Murray River.' It also introduces their antagonists--'the hairy, Bore-toothed Australian Trog', an ugly species that originates and matures inside brown beer bottles discarded in the Australian bush.
Divided into five chapters of substantial text, the book relates the various adventures of the gum nuts as they seek to deal with the troublesome Trogs once and for all.