 Rodeo contestants Johnny King and Corrigan meet, their fathers having been members of the Range Busters. When Johnny is knocked unconscious, time reverts to their father s era and the Range Busters are soon involved in the scheme to get Railroad right-of-way across Mother Slocum s ranch. When she is tricked into signing a release, the Range Busters find their job more difficult as the Sheriff is in with the crooks.