Plot: On April 20, 1925, Colonel Percy Fawcett, his elder son Jack Fawcett and Jack’s lifelong friend, Raleigh Rimmell, departed from Cuiabá, the capital city of the Brazilian state of Mato Grosso, to find “Z” — Col. Fawcett’s name for what he believed to be an ancient city lost in the uncharted jungles of Brazil