Following an unexpected visit by a young Northman, Queen Siobhan learns that a mysterious enemy has infiltrated her Kingdom and threatens to enslave its people. To save Eirenoch, her son, Prince Eamon must take on the mantle of all of the Kings before him and become the Onyx Dragon.

To do so, he must travel to an ancient temple far to the north and receive the blessing of The Dragon, the source of all life on the divided island kingdom. Only by taking his place among the long line of Divine warriors, and reawakening a long forgotten order of knights, can Eamon ensure the survival of his people and protect his future lands.