One day, university student Shiki Satou finds himself in a dungeon town in a parallel world, stumbling upon the gift of Healing Magic. However, his inappropriate use of this power leads to his dismissal from the clinic where he had been employed. Feeling adrift, he resolves to venture into the dungeon as an adventurer to sustain himself. It is during this journey that he crosses paths with Yuel, a young slave girl bearing physical scars.