Relying on his Unique Skill "Abnormal Status Nullification," the adventurer Rude makes a living by gathering medicinal herbs in Dungeons filled with miasma. Because of this, he is avoided by other adventurers for smelling like miasma, unable to form a Party, and looked down upon daily with the derogatory nickname "Miasma Scavenger." At such a time, a new labyrinth is discovered, and Rude is invited to a Party that needs him as a luggage carrier. He challenges this labyrinth to change his current situation. However, upon encountering a powerful monster inside, his fellow adventurers betray him and abandon him as a decoy... After a life-and-death struggle with the monster, injured and having lost his supplies, Rude falls into a desperate, extreme situation. Faced with the monster's corpse lying before him, he gambles on the forbidden "Monster Eating" to survive──... The more he eats, the stronger he gets! A thrilling Gourmet adventure Fantasy begins!!