Gu Changge, a humble sword-washing servant of the Luoxia Sword Sect, appears ordinary and insignificant, but is actually an unparalleled Sword Immortal who has lived in seclusion for a thousand years. The demonic overlord Li Jiuyou leads the Twelve Fiend Cultivators in an attack on the sect. The sect's masters suffer defeat after defeat, and the Luoxia Sword Sect stands on the brink of annihilation. Just as all living beings fall into despair, this young man in coarse hemp robes, who spends his days wiping swords, raises his hand and summons ten thousand swords to transform into dragons, forming a river of swords that pierces the nine heavens. When the commotion subsides, he returns to the sword-washing pool, keeping watch over a pool of ancient swords and quietly awaiting the morning light.