Bobbie Morton is a gutsy heroine in the grand Australian tradition. She's a champion horsewoman who can hold her own amongst the men of the racecourse. As part of her adventures she must come to the bottom of a secret race-rigging scam, as well as fend off the advances of an amorous squatter.

A country boy, Jim Conroy, is living a dissolute life in the city, running around with vamp Helen Ross. When his father cuts him off, he is dumped by Helen and returns to the bush.