Fighting for law and order, Captain Video operates from a mountain retreat with secret agents at all point of the globe. Possesses scientific secrets and scientific weapons, Captai

Unaware that Dr. Tobor is in league with the dictator Vultura, Captain Video and the Ranger race toward Atoma in their space rocket to save the famous Scientist.

Captain Video has led the people of Varos to a great victory over the invaders from Atoma. But now, Vultura makes a last desperate effort to avert defeat and disaster.

Vultura, dictator of Atoma, sends strange, mechanical monsters to invade and conquer the Earth. Captain Video and the Ranger race off to do battle with them.

Captain Video seeks aid from a scientist who analyzes the mechanical brain he has captured. The scientist vanishes mysteriously.

Capturing one of Vultura's space platforms, Captain Video and the Ranger daringly use it to invade the dictators planet, Atoma.