Terra stands upon the brink of Unity. The armies of the self-proclaimed Emperor of Mankind have waged their bloody wars to bring the whole planet under his rule, crushing all traces of outlawed religion and worship from the face of this now secular utopia.

But even the mighty Thunder Warriors cannot cow Uriah Olathaire, last priest of the Church of the Lightning Stone, as he goes about his empty, hollow rituals - and only one last and thoroughly unexpected visitor can bring any hope of a possible reconciliation.