The Third Crisis dawns in Foundation S3 teaser

It's been nearly two years, but the third season of Foundation, Apple TV+'s epic adaptation (or remix) of the Isaac Asimov series, is almost here. The streaming platform released an action-packed teaser of what we can expect from the new ten-episode season: the onset of the Third Crisis, a galactic war, and a shirtless Lee Pace.

(Some spoilers for first two seasons below.)

Showrunner David S. Goyer took great pains in S1 to carefully set up his expansive fictional world, and the scope only broadened in the second season. As previously reported, Asimov's fundamental narrative arc remains intact, with the series taking place across multiple planets over 1,000 years and featuring a huge cast of characters.

Mathematician Hari Seldon (Jared Harris) developed a controversial theory of "psychohistory," and his calculations predict the fall of the Empire, ushering in a Dark Age period that will last 30,000 years, after which a second Empire will emerge. The collapse of the Empire is inevitable, but Seldon has a plan to reduce the Dark Ages to a mere 1,000 years through the establishment of a Foundation to preserve all human knowledge so that civilization need not rebuild itself entirely from scratch. He is aided in this endeavor by his math prodigy protegé Gaal Dornick (Lou Llobell).

The biggest change from the books is the replacement of the Empire's ruling committee with a trio of Eternal Emperor clones called the Cleons—a genetic triune dynasty comprised of Brother Day (Pace), Brother Dusk (Terrence Mann), and Brother Dawn (Cassian Bilton). Technically, they are all perfect incarnations of the same man at different ages, and this is both the source of their strength as a team and of their conflicts. Their guardian is an android, Eto Demerzel (Laura Birn), one of the last surviving androids from the ancient Robot Wars, who is programmed to protect the dynasty at all costs.