On the day when the Dayin Dynasty collapsed, Prince Jiang Jin was framed by his own brother, his entire family was destroyed, and he was trapped in a sea of fire. On the verge of death, his soul traveled to another world and came back to life when troubled times were about to arise. He vowed to take back the mountains and rivers and cleanse his enemies with blood. And the mysterious and lonely minister Yu Si, who has a nine-fold blood contract, is secretly dormant in the enemy camp, just waiting for one person - the prince who has been forgotten by the world. The fates of the two are intertwined. One thought is fire, the other is blade. Jiang Jin re-establishes the dynasty with violent ambition, and Yu Si sweeps away the wasteland with cold-blooded plots. When the iron cavalry crushed the imperial power, and when the sword light dyed the sky red, they realized that the reforging of the mountains and rivers was originally a desperate agreement set up for each other.
