1x11 - The Legend of Prince Valiant

On the day that Ian, Warrior King of Kengary, comes to Camelot to negotiate an alliance with Arthur, Baron Draconarius and his brother Robert arrive to seek aid from Arthur. Arthur barely restrains his deep-rooted hatred for Duncan as Guinevere offers him food and shelter for the night. Duncan repays this kindness by plotting to sabatoge the negotiations with Kengary. Soon the king's faith in his New Order is put to the test when the baron's actions go too far and Ian demands justice by the sword.