Hancheng, a border fortress and a place of exile since ancient times. The old city lord, Han Ye, gravely wounded the Demon King with the Heavenly Demon Sword and ushered in an era of Dark Spirit Power cultivation. The current city lord, Han Jiangyue, put an end to the Twin Cities turmoil, then left for distant lands in search of a way to escape his predicament. Han Tian, the young lord of Hancheng, was born during an eruption of the Heavenly Demon Sword. His spiritual power was incompatible with it, and later an old madman took him away. More than ten years later, he cultivates both light and dark, enters the world through the Dao, and challenges the Heavenly Rank with the Mortal Rank. He champions peaceful coexistence, unites the three races, and points his sword at the heavens.