Heaven-Devouring Demon Lord faces a Love Tribulation. Soul transmigrates into Cole, a worthless live-in son-in-law. Original Cole died saving wife, Jade Orion. Demon Lord resurrects family. Secretly protects Orion family as Masked Sovereign, slaughtering Northern Wastes cavalry and executing traitors. Final showdown with Empress Lorraine and her male favorite, Linden. Completing Love Tribulation, Demon Lord gives up godhood, remaining a terrestrial immortal with Jade Orion.
