A business man buys a house, but he has a hard time trying to get rid of its previous tenant, a dirty bum.

The story of the Yuma Crossing, the place where centuries of travelers crossed the Colorado River as told in a series of reenacted vignettes by colorful characters from the Quechan tribe, the conquistadores, Father Kino, Olive Oatman and others up until the first bridge was built in the 1920's.