Lucifer's War led to the overthrow of legions of rebel angels into the smoky depths of the Underworld, and in its immeasurable spaces a state of demons arose. The domains of this state are ruled by archdemons - former seraphim, fiery warriors of Heaven, and the first among them is the terrible Beelzebub, the Lord of the Flies. The demons rule, torment sinful souls, multiply their wealth... and their own torment. One of them, the powerful Sargatan, did not forget Heaven. For many millennia he has ruled his vassal state and built the beautiful city of Adamantinarx, the best of the capitals of Hell. But he is haunted by the thought of the lost closeness to the Divine, of the joy unattainable in Hell. A seemingly small incident leads him to a decision that shakes the foundations of Hell. Sargatan dares a new rebellion in order to return to Heaven and bring with him those who will follow him in the name of redemption, be they demons or the souls of mortals.