Three years ago, his wife disappeared mysteriously, leaving only her infant daughter and a strange "contract" engraved deep in Gu Yebai's soul.
Since then, this former antique restorer has become a full-time dad. However, his daughter Gu Nian'an seems to have an innate "curse" - she is like a magnet, attracting all kinds of ghosts and evil spirits wandering in the world all the time.
In order for his daughter to have a peaceful night's sleep and for her to grow up safely, Gu Yebai had to fulfill the ancient contract called the "Spirit Crossing Contract".
"The obsession of the resentful spirit is locked: an unfinished lullaby."
"The Earthbound Spirit's request has been resolved: a letter home that cannot be sent."
"The demon in the mirror has seen his wish: a blurry face."
He has seen more ghosts than living people. What he solved was not the evil ghost, but the unresolved obsessions. Whenever he transforms into a spirit body, he can gain a trace of power called "peace" and build a fragile barrier for his daughter.
This is the story of an ordinary father who just wants his daughter to grow up healthily, and is forced to become the strongest "spiritual transferr" in the bizarre world of ghosts. He doesn't want any enlightenment that reaches heaven and earth, he only wants a murmur from his daughter's dream: "Dad, I'm afraid of the dark."
And he would answer: "Don't be afraid, as long as dad is here, it will be dawn."