A saint in the human world and a monster in the secret realm. They have different identities and the same mission. Reincarnation, encounter, parting, in the long river of time, Yue Dan cannot escape or break away. The wind of the wilderness has been blowing for hundreds of years, and Xuanyu has been waiting for hundreds of years, but every time they meet, they only end up saying farewell. It turns out that even time can't untie the shackles that are deeply ingrained in the soul. Since it can't be untied, it can't be untied.
"I don't have long to live, why do you have to accompany me to death?"
"What's the use of living longer. You have left me too many times. This time, we are together."
Concept: Two-way love