In times long past, this planet was the home of a mighty, noble race of beings who called themselves the Krell.

United Planets Cruiser C57D, now more than a year out from Earth Base on a special mission to the planetary system of the great main-sequence star Altair. And so, at last, mankind began the conquest and colonization of deep space. Almost at once there followed the discovery of hyperdrive through which the speed of light was first obtained and later greatly surpassed. By 2200 A.D., they had reached the other planets of our solar system. In the final decade of the 21st Century, men and women in rocket ships landed on the moon.