Chu Canglan is a young swordsman who has risen to fame in the world. He is a master of the "Liu Shuang Sword Technique", but he has never been able to find his own "Tao". During an adventure in a secret realm, he mistakenly entered the ancient sword tomb and awakened the sword spirit Zi Ning who had been sleeping for thousands of years. Under the guidance of Zi Ning, he traveled through the dangerous lands of Kyushu, challenged various sword cultivators, and finally understood "use the heart as a sword" and cut through the mist of the blue sky with one sword.
