The legend of Lemuria the mysterious island and all its wonders and dangers are all too real, and it has been found.

But the ancient stories of the great treasure and horrors that existed through the ice rift and beyond Odin's Gate could never have prepared them what they discovered - monstrous creatures that lived in the sea, in the air and on land. And now Troy Strom and Anne Walsh are trapped there among them.

But they have a plan, and if they can retrieve the Heart of Odin, a massive ruby, they can use it to escape. Until then, they must learn to live on a primordial island among horrifying life forms that defy the normal rules of evolution. To survive, they need to travel into the dragon's lair and find the truth about the ancient drekka of myth and what it guards, and also discover the fate of the first Viking clan that set foot there and what they had become.