A legendary Royal Geographic explorer, Col. Percy Fawcett takes his son and friend into Brazil's remote jungles to find an ancient civilization - the fabled "Lost City of Z". In 1925, he disappears forever. What really happened to Fawcett and his party? Now armed with secret family documents and new clues, modern day explorer Niall McCann travels to England and South America to unravel the mystery of Fawcett's disappearance.