Sang Nuan suffers from a rare cold syndrome, and her body temperature is lower than ordinary people all year round, until she begins to meet a warm man in her dreams who calls herself "Ayan". He meets her every night in a dreamland where cherry blossoms are in bloom, giving her a warmth that she cannot get in reality. Sang Nuan found an ancient mirror in an antique shop. When A-yan's face appeared in the mirror, the dream began to seep into reality. A-yan was able to briefly appear in reality and use his unique warmth to relieve Sang Nuan's cold syndrome, and the relationship between the two deepened day by day.
Sang Nuan investigates and discovers that A-yan is actually Chu Mingyan, the earthbound spirit who died in a fire a hundred years ago. He is trapped in the mirror and cannot be reincarnated. He consumes his spiritual energy every night in his dreams just to give her warmth, which will accelerate the dissipation of his spiritual body. When Sang Nuanhan was dying of the disease, A-yan chose to use his last spiritual power to save her, at the cost of disappearing forever. When Sang Nuan woke up, she found that A Yan was gone, leaving only the ancient mirror.
Sang Nuan embarks on a journey to find a way to save the earth-bound spirit. From antique shop owner to Taoist priest, she finally learns that if she wants to renew her relationship, she must find A-yan's remains and hold a special ceremony, which will cost her a heavy price.
Intent: Traveling through dreams and reality