The Wrecker, a multiply-disguised master villain, continually sabotages and wrecks trains on the L & L Railroad to fuel the success of a competing airline service. In one of his earliest roles, John Wayne portrays aviator Larry Baker, whose father was killed in one of the "Wrecker's" train wrecks. He comes to the rescue of Gloria Stratton, whose father Frank is falsely accused of the crimes. They band together to track down the "Wrecker." Filled with death-defying action, stunts, and near-misses, this feature version of the serial is packed with high energy and excitement that surpasses many other films of the day.