The inherent good, evil and evil in the world are just shackles fabricated by those in power. In order to plunder the luck of immortality and monopolize resources, the high-level immortal sects of the Nine Heavens Immortal Realm, the old nobles of the demon clan, and the hidden mortals in the hidden world have artificially provoked a thousand-year battle between immortals and demons, using monks, demons, and low-level mortals as pawns in the game.
Xie Xuechen, the head of the Nine Heavens Sword, and Yu Zhaozhao, the nine-tailed cat demon saint, start an intellectual game as prisoners and under house arrest. One person sticks to his original intention of swordsmanship to track down the truth of the betrayal, while the other uses his opponent's sword to solve the mystery of the ancient demon's seal. The two of them tore apart the greedy sins of the three forces while solving puzzles, testing, confronting, and cooperating. The story strips away the grand narrative of the struggle for hegemony in the three realms and focuses on the struggle, perseverance and chivalry of small people in the war, breaking the stereotyped labels of good and evil, demonstrating that morality is never defined by race, and the goodness and evil of people's hearts are the measuring rod; the protagonist overthrows the decadent old order, establishes new rules of equal coexistence, and safeguards the bottom line for ordinary people's stable survival.
