Juliet has prepared her allies as well as any battlefield general. If the King of Kings has invited us to the Cobalt Club, then his forces are either already there or waiting to pounce. And either way, surrounding it with allies will keep him penned in away from help.
Juliet is particularly concerned that the King might get away, as so many villains do when the battle swings against them. So she contacts Harmon Creel, and gets his clan of Innsmouthers to patrol the river, in case the King goes that way. If he tries to flee underground, we have the debased Boucher clan of Black Dog County, whom Walker is able to hire for beer and hard candy. The Cult of Zoth-Ommog agrees to spread an Elder Sign around the Club, and the Hub Pack, biker werewolves from Boston, come down to act as the cavalry if everything goes to Hell.
Thus prepared, Juliet enters the Club with Walker, Billy, Alex, Diligence and Dr. Armitage. Waiting for them are six young ladies with various archaic weapons, clustered around Toussaint. Kreutz is there, with Abby. Thirty big men in fur shakoes have taken the place of the band. And a shortish, round-faced fellow in a fancy gray coat is standing beside one of the tables.
He starts out speaking French and then Toussaint gives him a spell which switches him to English. He is the King of Kings, sometimes called Bonaparte, and he's using America as his staging ground to recruit and train a vampire army to return to Europe and conquer it. He's not planning to rule America, but will brook no interference with his plans.
Bonaparte confirms that Kreutz used the blood sample from Juliet to infuse the six girls with Slayer blood, giving them temporary Slayer powers. Juliet's quite put out by this, and while Bonaparte is trying to talk her into a division of powers, she stakes him in the heart!
Bonaparte gasps, but it's one of his Grenadier Guards who crumbles to dust. The Guards are sworn to die for him, you see, and each of them takes that oath most literally!
Fighting ensues, wild and confusing. Diligence creates a disk of sharp-edged wood over Toussaint's head, slicing it clean off. This breaks Toussaint's voodoo spell over Juliet, and she manages to stab several of the fake Slayers with the bone knife, draining her blood back into herself, taking back what they stole. Only the Russian girl, Natalia, who throws knives with wicked accuracy, escapes.
Kreutz uses pepper spray to incapacitate Walker and a stun bomb to stun Juliet. She kicks the bomb back at him, though. It explodes just below his belt, rendering him most decidedly out of action.
Outside, Lancers on motorcycles threaten Melanie. Alden, her protector, leaps into battle to save her. He gets pierced by a lance, but not through the heart, so he's okay.
Bonaparte barely escapes along with the Lancers. As the Hub Pack roar in on their cycles to give chase, they hit the Elder Sign around the Club and stop short, with their souls ripped from their bodies. Seems the Zoth-Ommog cultists were bitten by Bonaparte and sabotaged their ritual. Walker goes up into the Umbra to find their souls, leaving our heroes alone, bloodied but victorious.