Marco's ingenuity -- and loyalty -- is put to the ultimate test when Kublai takes a violent and bold step in his quest to become emperor of the world.

Marco's past with Kokachin resurfaces. Kublai's position as khan faces a final challenge, even as he welcomes a new heir into the world.

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

Marco searches for the mastermind behind a murderous plot, while Prince Jingim weighs the risks of retaliation.

Marco and Hundred Eyes take on a dangerous mission to infiltrate the walled city of Xiangyang, while its chancellor struggles to hold on to power.

When Kublai sets his sights -- and his army -- on the taking of the walled city of Xiangyang, Marco's allegiance is tested.

Kaidu's ruthlessness reaches new levels in his bid for power, while Hundred Eyes' former lover has him questioning his loyalties.

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

As Kublai Khan battles his warmonger brother for rule over Mongolia, Marco learns that justice in Khan's Imperial City is as swift as it is deadly.

On the eve of an auspicious ceremony, Marco searches for the culprit behind the assassination attempt on Kublai Khan -- even as a new one takes shape.

Marco finds his fate in the hands of Kublai yet again, while behind the walls of Xiangyang, Chancellor Sidao sets his sights on regaining power.

Marco gets an unpleasant surprise upon his return to Kublai's court. Kublai faces an impossibly difficult decision.

Marco begins a dangerous relationship with the beautiful Blue Princess as tensions grow between Kublai and Xiangyang's cunning chancellor Jia Sidao.

As war looms with the walled city of Xiangyang, Prince Jingim tests his diplomacy skills while Kublai questions Marco's allegiance.

On Prince Jingim's wedding day, Kublai receives disturbing news about the ambitions of his cousin, while Marco navigates a delicate mission.

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

Rebel attacks flare up in the south and pull Kublai's attention away from home. Kokachin gets an unwelcome visitor from her past.

Ahmad's deadly and secret chess match against Kublai enters its endgame, even as Kublai's thirst for power grows stronger than ever.

The challenge for the throne escalates when two of Kublai's sons are endangered. Far away, another threat to the khan is born.

After three years crossing seas, deserts and the Silk Road, a young Marco Polo finds himself a prisoner of the great Kublai Khan.