The Miracle of the North had different effects on different people. It spurred the aristocratic Priest-Astronomer, Hepteidon, to conceive a world plan to save mankind. All he needed to do first was to take over the Empire, then perhaps create a miracle of his own. Complications, of course, a slave who seems to will his own death just to make a point, an Imperial concubine who might be demanding the impossible of him, and a wily Emperor with an agenda of his own.
Hepteidon will need his old companions from the Miracle days to help sort out the mess. Trouble is, the kind of help they bring is not quite what he is hoping for...