Under divine punishment, the border guard general Yan Linyi and the prince's son Jiang Hanlin were thrown into an imaginary ancient world. Their memories were lost, except for the system command - to kill each other.
One is as calm as cold iron, and the other is as smooth as spring breeze. They were originally rivals of life and death, but amidst the beacon fire at the border and the undercurrent of the court, a subtle bond was born between temptation and vigilance. From Heifengling's sacrifice to protect each other, to Yunzhou City's silent care, the cold mission instructions could not withstand the increasingly hot heart.
Yan Linyi promised him to marry four times. From heaven and earth as witnesses to asking the gods, the vows were stern, but he could not escape the trap of fate and eventually fell into a dead end. In order to save his lover, Jiang Hanlin stepped into four fantasy reincarnations. Each time he committed suicide when the other person loved him the most, thinking it was a one-man show, but he didn't know that Yan Linyi had always experienced the pain of heart-cutting with him.
Going back to the past still cannot change the outcome. On the day Yan Linyi was stained with blood on the execution ground, Jiang Hanlin suddenly remembered his past - the begging in the hall of gods, the price of forbidden love, and the divine punishment that pushed the two of them into the abyss.
The memory returns, the lover is gone. There is only one madman left in the world, who repeatedly whispers "Yan Linyi" on the street, making the vow of "four times of marriage" become a lingering cry in the wind.
