Originating from the three-life stone in the underworld, the God of War agreed to accompany the stone spirit for three lives in order to overcome the calamity of love. In the three reincarnations, he is the all-powerful general, and she is the stone spirit who lives in the River of Forgetfulness. From seeing each other in the mortal world to protecting each other on the immortal road, she cannot escape the fate of being in the mirror, the moon in the water, and the regret of not being able to love is engraved in her soul. Returning to his throne after a calamity, the God of War gave up all his glory and was willing to be punished by the whip of thunder and calamity, just to change his destiny and reshape his immortal bones. Crossing the difference between immortality and darkness, and fighting against the constraints of heaven, he will eventually take her to the heaven, exchanging a thousand years of obsession for one lifetime to stay together, making the three lifetimes of regret become a thing of the past, but his love will last forever.