The Cardenas family is a powerful sword clan that protects the Arcadia Empire. Their direct descendants are known to have special abilities called “Traits,” and it is said that dragon blood runs through their veins Leonard Cardenas, a trainee at the family’s training center, suddenly gains memories from his past life. In that life, he was Yong Muhyeok, a legendary Sword Emperor With these memories, Leonard grows stronger and begins to challenge other talented trainees from the main family. At the same time, he starts to uncover the secret behind the dragon blood Using the power of his past life, Leonard aims to achieve what he couldn’t before To become the strongest Sword Emperor.