Life is finally back to normal for Arthur Quinn. Three months ago, he and his friends put their lives at risk to stop the trickster god Loki from taking over the world. However, just when Arthur is starting to relax again, the dreams start once more; dreams of gods, dreams of war, dreams of wolves. It can mean only one thing. Loki is back. In the midst of a deep snowfall, Loki plots his vengeance on Arthur.

In the months since their last battle, the trickster God has been assembling a deadly army of wolves and he intends to take the world once and for all. Can Arthur trust his two new classmates? Where did Ash's puppy come from? And what is hidden in the National Museum that Loki is so desperate to get? Mysteries and questions arise as, once again, it's down to Arthur Quinn and his friends to save the world. But what they don't know is that this time, Loki has help...