The House of Cardenas, the legendary sword that shields the Arcadia Empire, is feared as a powerhouse of absolute martial might. It is whispered that their direct descendants carry the blood of dragons, manifesting in supernatural powers known as "Unique Traits." Leonard Cardenas, a humble trainee in the family’s academy, suddenly awakens the memories of his past life as Yeon Muhyuk, the man once hailed as the world’s greatest Sword Emperor. Armed with the wisdom of a legend, Leonard begins his climb to the top, challenging the elite high-bloods and uncovering the dark secrets of the dragon’s lineage. The journey to become the ultimate Sword Emperor begins now!