An agent finds himself pitted against a former Nazi who has a plan to become ruler of the world through mind control.

Matt Helm is called out of retirement to stop the evil Big O organization who plan to explode an atomic bomb over Alamagordo, NM, and start WW III.

Mario "Cantinflas" Moreno is a hired hand, Pepe, employed on a ranch. A boozing Hollywood director buys a white stallion that belongs to Pepe's boss....