Stephen travels to black holes, Saturn, the Big Bang and Santa Barbara, California, witnessing some awe inspiring sights.

Hawking tries to find a theory for everything, discussing the Great Filter solution to the Fermi Paradox and the dangers of artificial intelligence during a visit to Proxima Centauri b.

The Commander and his spaceship the SS Hawking encounter an alien AI, then race to the edge of the universe and plunge into an alternate Earth.