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From Republic's press release: "The Ruler, a diabolical scientist who wants to enslave the Solar System, learns of Commando Cody's design for a rocketship that can go anywhere in outer space. He is determined to sabotage Cody's work."

Commando Cody is a top secret scientist who wears a mask for security reasons. He recieves two new assistants, Joan Gilbert and Ted Richards, that help him develop an atomic powered rocketship. The Interplanetary commission has received a warning from a mad scientist known as Ruler. Cody is named the new sky marshal of the universe in order to combat Ruler's threat. Cody explains that reports of flying saucers are actually reports of Ruler's missles attempting to land on Earth. Cody develops an cosmic dust blanket that encricles the globe and that will cause any enemy craft to disintegrate before entering earth atmosphere. Ruler fears Cody's abilities and sends agents to sabotage Cody's rocket and learn the secret of the cosmic dust blanket. Cody drives off the agents and finishes his rocket preparing another line of defense against the Ruler. Add a recap »