Chocky hopes, with Matthew and Albertine's help, to help the human race discover cosmic power, which unlike Earth's finite natural resources, will sustain them for as long as the universe itself exists. But their knowledge has aroused a great deal of interest from the military, and they are willing to take drastic action if they don't get what they want.

Three exciting stories of science fiction adventure set many years in the future. The Earth, once the hub of the Galaxy and its judicial system, is now wasteland. This and its survivors are all that is left of a bygone age after the most vicious intergalactic war ever seen. The Earth's colonies are devoid of any law enforcement system. It is the survival of the fittest (or meanest). The only law left is Ragnarok, a hard-hitting enforcer and his alien friend Smith, who travel the Universe in an attempt to see fair play.

A secret, high-technology international agency called SHADO defends Earth from alien invaders.