Javier Navarro, a Falangist, is ordered to infiltrate Republican Madrid to deliver a message to a member of the Fifth Column.

• Film Bassoli
• Rafael Rivelles
• Fosco Giachetti
• Conchita Montes
• Juan de Landa
• Manolo Morán
• Blanca de Silos
• Luis López Estrada
• Argimiro Guerra