Uncharted 2: Among Thieves

The story picks up a few years where the first one left off, following the previous games fortune hunting hero, Nathan Drake, as he searches around the globe to try to solve another of the world's unsolved historical mysteries; this time regarding the famous merchant/explorer Marco Polo, who in 1292, mysteriously came back from a journey having lost 13 ships and 500+ passengers, with no explanation ever given on what had happened to those ships. After Drake gains knowledge of an ancient relic and a mysterious Himalayan Valley that may be connected to Marco Polo, he sets out on an adventure to discover the secrets of Polo's lost fleet, which he hopes will lead him to one of history's greatest undiscovered treasures.