In Overlord: The Sacred Kingdom, the story continues the dark fantasy saga of Ainz Ooal Gown, the undead overlord who rules the Great Tomb of Nazarick. After establishing his dominance over various territories, Ainz sets his sights on the Sacred Kingdom, a region struggling against a brutal invasion by the monstrous forces of the Demon Emperor Jaldabaoth. With his strategic genius and powerful minions, Ainz offers an alliance to the Sacred Kingdom to protect them from Jaldabaoth's destruction, but his motives remain shrouded in mystery. As the lines between heroism and villainy blur, the Sacred Kingdom must decide whether Ainz is their savior or their next conqueror.