Space Void

They came out of the void, from Venus, only to find there was no answer to their radio signals. Earth seemed dead. And on the Moon, Man's greatest achievement, the Lunar Military Base was a mass of rubble and blasted wreckage. Here, the crew of the Stellar Polaris, led by Commander John Forrest, discovered one sole survivor. He was mad! To their questions he could only answer that the children had destroyed the armed might of the Military Base.
When they finally reached Earth, they found that what he had said was true. The children had taken over control of the world. But then, these were no ordinary children - and their little weapons were almost enough to overthrow the armed superiority of the Stellar Polaris herself!