Dungeon diving is a way of life for adventurers seeking hidden riches and powerful monsters to defeat. Tina, a brash young explorer, is eager for glory—but her reckless pursuit of treasure leaves her gravely wounded. On the brink of death, she’s stunned when a monster comes to her aid.

Her savior is no ordinary creature. He is the fabled demon known as the Beast King Garon—still very much alive despite legends of his demise. In exchange for saving her life, Garon makes one request: Tina must join him on his journey to heal wounded monsters. But can an adventurer raised to slay monsters learn to heal them instead?