Arthur thinks that life has returned to normal. Three months have passed since he and his friends defeated the Viking god Loki and saved the world, and since then, everything has been quiet. But then Arthur has strange dreams again: he dreams of gods, magic and a wolf. This can only mean one thing: Loki is back and only Arthur can stop him. As the days tick by, Arthur and his friends find themselves in a race against time to find the god and stop him from setting his sinister plan in motion. But what they don't know is that this time, Loki has help...