Gaal Dornick leaves her life in Synnax behind when the galaxy's greatest mathematician, Hari Seldon, invites her to Trantor.

Brother Dusk reflects on his legacy as he prepares for ascension. The Foundation arrives on Terminus and finds a mysterious object.

Salvor faces off with an enemy of the Empire. Brothers Day and Dusk are at odds, while Brother Dawn wrestles with his truth.

An unexpected ally helps Salvor broker an alliance. A confrontation between the Brothers leads to unthinkable consequences.