Jongin is ready to rage his war against Heaven, and this time he's going to use every weapon at his disposal. Enter the Four Horsemen, his most faithful knights, or so he thought... Meanwhile, Heaven continues to spy on Hell, gathering information and getting ready to stop Jongin at all cost. No price is too high to put an end to the Devil's plan. And then there is Kyungsoo, who is this close to losing his shit. The perfect recipe for disaster, but who doesn't love a little chaos in this world?