Human cowboy hero is teamed with Rex, King of Wild Horses, an ornery critter but a magnificent animal.

A twenty-year veteran of the printing room of The San Francisco Chronicle is passed up for a promotion at the same time his son is accused of graft and involved in scandal. The historical landmarks of old San Francisco are present: The Pacific Telephone and Telegraph Building, City Hall and the Pickwick Hotel-- but they don't distract from the dramatic and emotional perforamces at the film's center.

"Hero is son of owner of taxicab company. Learning of injustice toward independents, he becomes independent driver. Heroine inherits half interest in company, and desiring to learn truth, goes to work as telephone operator in independent garage. Together they force a consolidation with the independents, and find happiness in their love."

Jack Wade is the son of a wealthy father who runs a successful ship-building company. He uses his athletic prowess to defeat the villainous competitors who are out to financially ruin his father.