Legend has it that a cold and mysterious flower blooms in the extremely cold place leading to the underworld. It symbolizes death and separation.
It takes a thousand years for the flowers to bloom, and it takes a thousand years for the flowers to fall. The flowers bloom when the leaves fall. The flowers and leaves have the same root, but they will never be seen.
Lan Shi and Hua Yixuan are the reincarnations of the same flower and leaf. In the first life, the leaves died first; in the second life, the flowers died first; in the third life, they both died for love. When Hua Yixuan opened his eyes again, he found that he had not entered the fourth life, but was reborn back to the time before meeting Lan Shi in the third life. This time, Hua Yixuan no longer wanted to advocate love and justice. All he wanted to do was to take off his uniform and follow his boss to live a life of love that does not envy mandarin ducks or immortals...