In her previous life, Gu Yicheng was a brave and accomplished hero, while Lin Qingyue was the beloved princess of Sheng. Childhood friends since their earliest days, they had been betrothed by the emperor. They thought their peaceful life would go on forever.
But when the Yu Kingdom invaded, a plague of poison bugs caught Sheng off guard. Gu Yicheng led troops to guard the border, but no human body could withstand the poison. Lin Qingyue therefore tested the medicine on herself, supplying medicinal blood.
After enduring countless hardships, the medicinal blood was ready and the poison was cured. Gu Yicheng led his soldiers to drive back the Yu Kingdom, and the whole nation celebrated. But that was also the year Lin Qingyue died.
The sorrow she carried day after day eventually wore down her body. One day, Gu Yicheng put on his armor again and walked up the mountain, entering the cave where they had often watched the moon together.
The landscape changed, and for some reason, the mountain that had always been lush and green suddenly became covered in snow throughout every season. A thousand years passed.
In another life, fate decreed that they would meet again. They were destined to find each other across time. One waited a thousand years in a desolate world; the other crossed time to meet them. Even without memories of their past lives, they both knew that this was the person they had missed day and night.
In another world, strange and mysterious supernatural events bring the two together, and they fall in love once more.