You are an ambitious priest in a sinister cult, but your Great Old One lies dormant, locked under the awful power of the dread Elder Signs. He depends on you to free him from this half-existence! You must break your insane henchmen out of the asylums where they are locked up, gather spellbooks and other resources, summon fiendish monsters, conduct dark rituals, and protect yourself against the forces of normal society.
If you succeed, your Great Old One will reward you with the title of High Priest, second only to him in the coming cataclysm! But you have rivals, other (obviously inferior) priests in your cult, who seek to claim the prize that is rightfully yours! You must thwart them, while carrying out your plans. Only one can seize the precious title of High Priest – and it must be YOU!