An Bai arrives in a fantasy world where everyone can change professions. Upon taking the test, he discovers he has a talent for being a mage, but everyone advises him to give up. After all, being an orphan, he has no way to afford such an expensive, slow, and resource-intensive profession as that of a mage. However, An Bai awakens a system capable of adding attributes to his abilities. Each attribute can be applied to different spells, making even a basic Fireball, in his hands, a power approaching that of a nuclear explosion. Little by little, An Bai's name begins to resonate throughout this world.