Petr Clayborne, a member of the Underground has opposed the Leader Government and is caught. In the hands of his old enemy, Captain Hartog, he is told that he has killed his wife who has also betrayed him, and shock treatment induces the recall here--of his marriage to Alda and their forbidden relations which resulted in an unauthorized pregnancy; of their attempt to escape through the Underground; of the failure of the getaway; and only finally--when Hartog is overpowered--is the true informer revealed