The Castle of Man, a huge towering castle that straddles an important mountain pass to the north of Tagaret, is besieged by ogres, goblins, yakis, and dark sorcerers. If it falls, the armies of the Dark One will descend on Tagaret to end the Ancient Prophecy. Far to the south of Tagaret, Emperor Hanchi and his hundred-thousand man army is moving northward, destroying everything in its path.

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.

After an unexpected visit from a young Northman, Queen Siobhan learns that a terrible darkness has reared its foul head in the kingdom of Eirenoch. The minions of an ancient, evil spirit have stepped foot on her island and threaten to enslave its people. To save her lands, the queen must send her son, Prince Eamon, to the ruined temple of Dol Drakkar; a primordial shrine far to the north where the soul of the Dragon lies. There, Eamon will receive the blessing of the Firstborn and take on the mantle of all the kings before him. Only then can Eamon reawaken a long lost order of warriors known as the Knights of the Dragon, and lead the people of Eirenoch to victory.