The sword slaughters the divine land, hating the common people; shadows appear in the underworld, giving rise to murderous intent. The demon world is reopened, stained with blood, the traces of action reveal emotions hard to end. An unexpected sword shatters the exchange of Fuxi's Nine Dragons luck, the Dragon Qi goes uncontrolled and surges, shaking the Nine Realms, the gate of the demon world thus unseals, the Demon King descends, and heroes struggle to resist, causing the common people to suffer greatly, with sorrow spread everywhere. At this moment, the regime in Miao lands changes. The Northern Competition King, the Trembling Tian Que, and the Cang Wolf trigger a perplexing and unpredictable power struggle. In face of internal turmoil and external threats, amidst the rapidly changing situation, the master Qiaolai rises, his actions raise doubts, making the battle even more unpredictable. How should Shi Yanwen and Qiaolai work together to turn the tide? What secrets lie behind the suppressed Mo family and Lu family, rumored to have the power to expel demons, buried for two thousand years? As masters and disciples turn against each other, fathers and sons become enemies, where will the reluctant sword stab? The most brutal battle between humans and demons is about to unveil a bloody historical prologue. The warriors of the Central Plains are unable to withstand the demon might, suffering repeated defeats, while the regime in Miao lands shifts. Facing a situation where change is unpredictable at every moment, how will Qiaolai stem the tide, and how will Shi Yanwen prevent the invasion of the demon world? Meanwhile, hidden threats in the demon world begin to take action... 'Sword Shadows and Demon Traces' continuously brings climaxes to the plot, unraveling all unresolved mysteries for the fans!