In the chaotic age of Dayan, the Black Armor guards the nation, while Guixu brings calamity upon the world.
Murong Che, a down-and-out prince who has spent fifteen years in the care of the Black Armor Guards, is a good-for-nothing at the bottom of the ranks in public, but secretly possesses peerless mystical power. He endures humiliation and keeps his strength hidden, all to uncover the mystery behind his birth mother's tragic death.
During an assassination attempt, he saves his mortal enemy, Su Ningshuang, the Saintess of Guixu, who has been brainwashed and controlled by the sect leader. Burdened with a deadly curse and robbed of her memories, she has made destroying the Black Armor her life's mission, unaware that she has been a pawn from beginning to end.
When a secret scroll in the library is opened, a shocking deception comes to light: two ancient jade pendants are the keys to awakening a world-ending beast. Her curse seal, his deep-seated vengeance, and the fated enmity between the Black Armor and Guixu are all part of the sect leader's grand design.
From then on, enemies become allies, and the good-for-nothing reveals his edge. He dominates the Black Armor Guards and sweeps through the sect, playing the pig to eat the tiger and crushing everyone in his path. She breaks free of the mind-controlling curse, reclaims her cursed power, and turns on her former master as the Saintess.
With assassins from the imperial court ahead and cultists closing in behind, war flames rise once more in the northern frontier. No more pretending, no more holding back, no more running. The Black Armor is drawn, the deadly curse restored. Together, the two powerhouses overturn the board of this chaotic age, slay the evil god, and set the world right!
The strong should be the ones who decide the fate of this world!