A thousand years ago, the evil demon "Ki" came to the world. The "Ki", which transcended the two major races, brought about the most tragic disaster in history. Everywhere was devastated and people were wailing. The powerful power of "Kill" has left many strong men helpless.
It wasn't until the world's first spiritual master, Yuan, forged the artifact "Huang" and united with the powerful demon clan to eliminate "Slay". The indestructible power of "Slay" was sealed by Yuan in the supreme magic weapon "Shang". Since then, Yuan and his family disappeared from the eyes of the world. After generations of guarding "Shang", which has become a murderous weapon, the Yuan family has gradually become a family that only exists in legends.
However, ten years ago, unexplained turmoil occurred in the Minamoto clan, resulting in destruction. Only a few clan members survived. At the same time, the murder weapon "Shang" that the clan had guarded for generations also disappeared.
Today, ten years later, a girl named Zhi, carrying a mysterious black sword, is tracing the unrecorded history of thousands of years ago, looking for a way to break this tragic fate that cannot be ended.