A publisher bets an author that he won't be able to write a romantic adventure novel while on a walking trip from New York to San Francisco.

Ranch owner Sandra, fresh from animal husbandry school, brings a flock of sheep into cattle country. The local ranchers don't like it, and ranch foreman Gene must deal with it.

The story opens as Stony returns to his home town, only to discover that his sheriff father has been murdered by person or persons unknown. The new sheriff (Henry Brandon) resents the arrival of the Mesquiteers, going so far as to frame Tucson on a murder charge.

A small railroad is being squeezed out of business by the tactics of a trucking company owned by gangsters.

The female head of a criminal gang in Chinatown is after a valuable jewel, and lets nothing stand in her way of finding it.