Haunted by recent events, Kublai journeys with Marco into the mountains for answers. Empress Chabi takes action to insure an heir to the khan.

Marco's allegiance to Kublai is tested like never before. Mei Lin's bold move throws Ahmed's plans into chaos.

The day of the kurultai arrives, shaping Kublai's fate as khan. Ahmed makes his final stand, and Marco learns a terrible truth.