For centuries, a once-terrifying dungeon boss commanded legions of minions and controlled intricate labyrinths of traps and treasures. Now, he craves tranquility, settling in a quiet remote town under human guise. His days revolve around his adopted daughter Lila—a spirited girl whose burning ambition to become an adventurer constantly threatens his carefully constructed ordinary life. As her aspirations inevitably drag him back into the perilous realm he abandoned, he becomes her hidden guardian, deftly wielding his dungeon-master abilities to orchestrate her quests and shield her from harm. Yet maintaining his concealed past grows increasingly challenging as her adventures intensify.