Jonathan Peckinpaw feels he's failed in his patriotic duty when he's rejected by the army, but he sees a chance to redeem himself by exposing a secret ring of Nazi spies.

The Cisco Kid is captured while keeping a rendezvous with cantina dancer Dolores but is released by his captor, the commander of a U.S. Army regiment, to help break up a kidnap ring. On his way to Las Tables with his pal, Gordito, he makes a stop at the Martinez Rancho, where they learn that his friend Carlos has been kidnapped, from his wife Marquerita. At the Crystal Palace Saloon, Cisco runs into an old girlfriend, Sally, who he once jilted for a tight-rope walker, but she doesn't betray him when the sheriff and an army officer enter searching for Cisco.

Chinese sleuth Charlie Chan discovers a scheme for the theft of government radar plans while investigating several murders.

A detective's wedding is postponed when gunshots are heard nearby.