Sheriff Roy Rogers is mystified by the disappearance of his friend Betty Richard's freight plane, along with its pilot and a valuable shipment of gold. Desperadoes are determined to force Betty into bankruptcy and take over her airline. With the help of airplane mechanic Cookie and the Sons of the Pioneers, lawman Roy figures out what the thugs are up to and sets some dangerous traps of his own.As one expects from William Witney, Hollywood's premier shoot-'em-up director, the excitement level runs high with the expected hard riding, gunplay and fistfights, as well as other, more bizarre action interludes including a bull used as a murder weapon, and a monkey flinging dynamite sticks at mounted riders from a circling airplane. There's all this and Trigger too in what might be Roy Rogers' most far-out feature!