Tori, a boy who can only use everyday magic, works as a servant at the adventurer's guild to support his sick brother. He can only defeat slimes, and the magic stones he obtains are few and far between. While earning a living, he endures the unfair treatment he receives from the guild members. One day, he encounters a "talking book" in a cave. "Wouldn't you like to obtain a 'real magic stone'?" Those words will change Tori's fate forever. The story of the everyday magician's "unrivaled magic stone" begins here!