Far, far in the future Earth has achieved real peace and is sending out interstellar expeditions, not to conquer, but to explore. The third such expedition, has made it to the Vega system and discovered to everyone's amazement, not only a solar system but two worlds circling the Vega sun that seem to have atmosphere and water. And apparently intelligent life is there as well as well because something tries, and almost succeeds, in blasting the expedition ship out of space before it can even get close to either one. Damaged, with 3 dead men aboard, the expedition ship semi-crashes and seek to hide from this obviously hostile civilization. The three dead members of the crew are buried an...