Qin Qian and Wei Huaxian.
One is the eldest son of Qin, and the other is a disciple of Penglai Immortal.
By chance, Wei Huaxian entered the mortal world in search of the Yin-Yang Book lost more than two hundred years ago, met Qin Qian, and searched for the Yin-Yang Book and the Judge's Pen in order to unravel the fallen dream flower on Qin Qian's body.
Step by step, we move towards the entanglement of past and present lives.