The US Army has decided to modernize its cavalry, so Colonel James E. Devers is ordered by a general to convert a horse unit to motorcycles, but his men are easily outclassed as riders by a pack of rowdies, especially Grady Westfall; when he is arrested risking a long jail term, he's given one way out: enlisting as Corporal, assigned as driving instructor. Unit commander Captain Jack Hassler reviles his unorthodox boyish methods as undermining discipline and tradition, not to mention flirting with the Colonels daughter Beryl Ann, but he's needed, especially when his unit is deployed on a secret mission in Spain.

China O’brien; big city police woman; martial arts trainer, is forced to hand in her badge and head home to her father and the small town where she grew up. The peaceful town she knew is now struggling against the clutches of organized crime. When her father, the town sheriff, is killed China decides to run for his position and clean up the town. The poll results spark a series of confrontations that finally decide who runs the town