You were there when mild-mannered Zack Gilman was unexpectedly thrown back to ninth-century Scandinavia where he met a tribe of Viking warriors who bore a remarkable resemblance to people from back home in modern-day Minneapolis. You witnessed as he fulfilled the ancient prophecy and succeeded in finding the first two treasures of Yggdrasil's Chest. Now travel back to the ninth century with Zack once again as he goes to Asgard, the home of the norse gods, in search of the last of Yggdrasil's treasures-and the final answer to the Prophecy of the Lost Boy.