Tension mounts throughout the galaxy as the Cleons unravel, and a vengeful queen plots to destroy Empire from within. Hari, Gaal, and Salvor discover a colony of Mentalics with psionic abilities that threaten to alter psychohistory itself.

Predicting that the greatest empire ever to span the galaxy is headed toward collapse, Dr. Hari Seldon leads his followers to establish The Foundation on a remote world on the edge of the Empire – hoping to shorten the inevitable dark age that is to come.