Qin Yun, a doctor of law, awakened with very low magical talent after time travel, but unexpectedly gained the ability to transform "realistic legal concepts" into "cognition of world rules." He cannot release fireballs, but he can interpret, modify or even create magic contracts; he cannot cast fighting spirit, but he can invoke the "Anti-Monopoly Law" to disintegrate the monopoly alliance of the noble mage tower. When all mages pursue power, he uses "intellectual property law" to protect their arcane spells, "corporate law" to build the mage guild, and "criminal law" to judge the abyss demons. In this world that believes in fists, he wants to use the law to put gods in the dock.