Foundation and Earth is a science fiction novel, the final book in the Foundation series, and continues the adventures of Golan Trevize and Janov Pelorat, two citizens of the future society known as the Foundation. Together, the pair sets out to find the ancestral home of the human race, a planet which has faded into legend - Earth. Trevize, a councilman, is seeking justification for his decision to embrace the hive-mind Galaxia method, and as Trevize and Pelorat travel across the galaxy they learn not only about humanity's past, but its possible future.