In this documentary, Liev Schreiber can be heard narrating, as modern explorer Niall McCann travels to Brazil to solve the mystery of Percy Fawcett. McCann is the latest to attempt to discover what happened to Fawcett who disappeared in 1925 with his son and friend after searching for the Lost City of Z in the Brazilian Amazon. Using Fawcett''s notebooks, he tries to solve the mystery.