In the Qinglan Sect, the life of handyman disciple Lu Zhaoran was like the rusty sword in his hand, bleak and despised. Only the light of his senior sister Chu Yao was the only light in his gray world. However, this slight peace was completely shattered by the sudden pressure of the world's number one sword sect, the Tiangang Sword Sect. The mountain-protecting formation collapsed, the sect leader died in battle, and the sect's orthodoxy was in danger.
The moment Chu Yao burned her origin to protect her fellow disciples and fell on the verge of death, an eternal seal in Lu Zhaoran's body suddenly shattered. The sleeping ancient sword master "Ling Cang" awakened from this desperate situation. The dragon's roar of the rusty sword brings thousands of swords back to the clan! The Supreme Sword Lord, who once regarded all things as mere dogs, is now trapped by the emotions of the mortal world and is caught in an unprecedented struggle between the heart and the mind: Should he return to the indifferent way of heaven and walk alone in the sky, or should he hold the rusty sword in his hand and cut a way out for these small but tenacious creatures?
This is a counterattack that started from the beginning, and it is also a moral debate about "what is power". Lu Zhaoran (Ling Cang) re-established Qinglan in the ruins and passed down the supreme swordsmanship that combines ancient and modern times. Lin Hao, a genius disciple of the Tiangang Sword Sect, rebelled against the sect and came here to ask just one question. Surrounded by powerful enemies and undercurrents surging, can he protect the land that once gave him warmth? Where will that rusty iron sword point in the end?
