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 obtain a small amount of magic stones. He earns a living day by day while enduring the unfair treatment he receives from the guild members. One day, he encounters a "talking book" in a cave. "Do you want to obtain a 'real magic stone'?" Those words will greatly change Tori's fate. The story of the everyday magician's "unrivaled magic stone" begins here!