Troubles with the Vikings have been growing steadily worse this past spring. King Arthur decides that he must finally make a direct effort to form a peace treaty with King Olaf in order to stop the loss of life and property. But this delicate mission begins on a ominous note when he discovers that an item critical to its success has been stolen. It's one bad turn after another as Valiant and the others journey to the north during a time of great unrest in their kingdom.