Yggdrasil is a widespread online game that attracted many people but announced about sudden closure. Momonga loved this game very much and stayed with it till the end. Momonga achieved the powerful Overlord status there. He didn’t plan just to forget it and was waiting until the system banned him. However, the server didn’t banish Momonga’s account but transferred him to a virtual world with a skeleton view. The guy gets stuck in permanent troubles with no fellows or family nearby. All alone, he is going to conquer the game world that suddenly became real.