Description: The stone is described by Marco Polo as a massive raw sapphire which, if it truly exists, would be worth billions of dollars today. These discoveries set Drake on a new course, following Marco Polo's 700-year-old trail through a diverse range of exotic environments to find out if the lost city of Shambhala, rumoured to lie deep in the Himalayas, really exists. Following him on his quest will be Chloe Frazer, a new character voiced by Claudia Black of Stargate SG-1 and Farscape.