母親の死後、故郷の村から追放され、襲撃された半人間、半悪魔のエリオットは、父親のサキュバスの助けを得てダンジョンの王としての地位を確立する。Ostracized and attacked by his home village after the death of his mother, the half-human half-demon Elliot establishes himself as a dungeon lord with the help of his fathers succubus.