It is first in a 51-film series of "Three Mesquiteers" films based on characters from the novels written by William Colt MacDonald, eight of which starred John Wayne.

Lullaby and Bob and the other veterans arrive at Carrizozo, New Mexico and meet Stony Brooke and Tucson Smith, as well as Brack Canfield who advises the men to keep going west for their own good.

Bob and the other veterans exchange their vehicles for horses and covered wagons for the trek to the San Juan Basin, Lullaby continues on with his motorcycle side car.

Shortly afterwards there is the sound of a blast and an rockslide occurs on the trail, the caravan of veterans are forced to hurry out of the way, and everyone survives.

Stony and Tucson begin a gunfight with them, Lullaby appears on a hill in his motorcycle side car, and waves on the people behind him, but it is a bluff.