When the Galactic Empire died, the great psychohistorian Hari Seldon set up the Foundation to preserve knowledge and lead men to a new empire after a thousand years. Now Seldon's plan seemed ended -- ruined by the mutant mind power of hte Mule.
But there was a Second Foundation "at the other end of the galaxy" set up to protect the plan. The Mule had failed to find it the first time, but now he was sure he saw where it lay.
The men of the Foundation also sought its location. Some of their finest minds were being dominated -- and not by the Mule. They sought the Second Foundation to prevent its taking them over.
They saw only one place where it could be. And young Arkady Darrell, fourteen years old and desperate with fear, knew she had discovered the terrible secret.
Or had she?