Marco's ingenuity and loyalty are tested again when the Khan makes the violent decision to become emperor of the world; Marco must then make a decision.
Marco's loyalty is drawn into question and Kublai must decide what to make of him. Meanwhile, Sidao is yet again conducting his Mantis-game within the walls of Xiangyang.
Marco learns more about the culture that surrounds him and things of trade like linen, spices etc while also learning more on Asian combat which he puts to good use.