When the Rangers discover that a deadly and horrific dragon of unspeakable power has been loosed upon their world, they must find a way to destroy the monster before the creature of shadows burns them all into oblivion. Complicating their efforts, the discovery of a secret and hidden dragon cult that worships the monster, and a conspiracy of dark forces from the realm of shadows, threatens to destroy the peace their world has known for centuries and bring war to the people of Hir.

Struggling to survive the deepest of betrayals, the Rangers face a dark and foreboding time, as the world of Hir changes dramatically around them.