A Man Rides Through - the conclusion of Mordant's Need

Let's quickly recap the setup done in the first book: The kingdom of Mordant on the verge of crumbling and Castle Orison is surrounded by the Alend army. Of course the massive hole in the wall doesn't really help matters much, especially since it is a self inflicted wound created after the Congery's ill advised attempt to summon a champion to help them defend Mordant. Said champion was translated from a futuristic world and upon arrival he promptly used his laser rifle to blast his way out through the castle wall and take off leaving behind a gap that can't be quickly repaired. At that point Mordant's King found that he was left with few supporters as almost everyone has chosen to ally themselves elsewhere, even his own daughters. That's no surprise as the Cadwal army is also marching towards Orison and it will likely arrive while the existing siege is going on so there is no reason to hope for a good outcome. Yet despite all of that setup from the first book this one still manages to get off to a slow start by finding a way to do even more. Sigh.