3 months later we rejoin Nate in a filthy, cramped cell, and find him amusing himself with a shadow puppet recreation of Flynn's betrayal - with a carthartic twist. You've been played." Though Nate makes a valiant attempt to escape, he is cornered and arrested by the Turkish police. Claiming to simply want Nate out of the way for a time, but clearly enjoying the upper hand, Flynn chides his horrified partner: "You think I didn't know about the ships from the beginning? Any schoolboy could've figured that out. Left stranded in the exhibit, Nate is helpless as Flynn shoots display cases, triggering a cacophony of alarms. If they were carrying the Cintamani Stone, it might still be there." As Nate prepares to follow Flynn out from the tower, the former is betrayed. As Nate translates, Polo's words attribute this misfortune to an unusual source: "It was as if the ocean itself sought to throw off the terrible cargo we carried from Sham-bah-lah - the curse of the Cintamani." Nate is astonished: "My God, Flynn - Marco Polo found Shambhala. Nate, translating, learns that Polo's fleet was hit by a tsunami, and carried inland to rest beside a mountain somewhere on the west coast of Borneo. In this light, the previously blank scroll is covered with Latin script and a map. Identifying the substance as resin, the latter lights a piece - and the room is suffused with an eerie blue glow as it glows. Flynn is distraught, but Nate has a hunch. With an apology to its long-dead owner, Nate smashes the ceramic lamp to find a weathered scroll, seemingly lacking any legible details, and pieces of a strange residue. After several close calls with the security personnel, the duo reaches the exhibit. Chloe departs to deactivate the floodlights illuminating the tower where the Polo exhibit is held, leaving Nate and Flynn to infiltrate the main building. Nate, Chloe and Flynn enter the sewer system beneath the Istanbul Palace Museum. She suggests that they complete the heist, find Polo's lost ships, split the treasure three ways - and then abandon Flynn to elope. When Chloe recognised the scope of Flynn's commission, she decided that Nate would want to be involved. The two are, unbeknownst to Flynn, intimately acquainted though we discover that Nate ended their previous relationship, she bears him no rancor. Chloe is the first to articulate what all three are thinking: "So - we're dicking this guy over, right?" Nate is awakened in his hotel room by a knock at the door, and opens it to find Chloe standing outside. Finding this, the trio believe, is the true purpose of Flynn's unusual assignment. Nate speculates that the lamp contains a hidden message from Polo, revealing the fate of his lost fleet, undoubtedly laden with treasures of incalculable worth. Polo documented every detail of the expedition - but never disclosed the fate of the missing ships and travellers. It landed in Persia a year and a half later, diminished to one vessel and 18 survivors. Polo's fleet left China with 600 passengers aboard 14 ships, loaded with treasure from the great Kublai Khan. Nate initially dismisses the item as worthless, and Flynn's benefactor a collector with more money than sense, but an oblique revelation in a document written by Marco Polo changes his mind. He explains that the commission is a clay oil lamp, a seemingly unremarkable artifact inside the museum's Travel of Marco Polo exhibit. Flynn insists that he requires Nate's assistance to make the theft, and introduces a third conspirator: Chloe Frazer, an Australian he describes as an expert getaway driver. Nate is skeptical: knowing of two others who died at the hands of the museum's extensive and overzealous security force, he himself barely escaped the building during a previous illicit out-of-hours visit. The British thief has a client willing to pay a substantial sum for him to procure an item inside the Istanbul Palace Museum. Six months prior to the train crash, Nate is found at a beachfront bar where he encounters Harry Flynn: an old acquaintance and sometime partner in crime in the shadowy world of black market antiquities. After an agonising climb to safety above, Nate lurches through the wreckage, recalling the events that led him to this place. Right on cue, his seat jerks and violently detaches from its mounting, hurtling him downwards through the vertical train car to hang above a dizzying drop. His head rolls back as the pain hits him, and he notices that snowflakes drifting outside the window appear to be falling.sideways. He looks around the car in confusion, then glances down to see a bullet wound in his stomach. A beaten and disoriented Nathan Drake awakes in a tattered train seat.The synopsis below may give away important plot points.