Fate, a castle guard in a world where one's skills are everything, has acquired a skill called "Gluttony" that does nothing but make him hungry, leaving him with a miserable life.

But one day, he defeats some who are bandits infiltrating the castle, and his world changes.

Thus begins the story of how a young man once ridiculed as talentless climbed from the lowest stratum of life to the top.

[Source: Crunchyroll]