In the city with flashing neon lights, there are countless unknown supernatural cases hidden. {Lu Yuan} was born with a pair of spiritual eyes that can see dead souls and evil spirits that ordinary people cannot see. However, because of this ability, he is regarded as an alien and can only make a living by taking on bizarre commissions.
Su Wan, an orphan girl who was abandoned by her family, accidentally became his follower and maid. She was timid and careful but could always find clues at critical moments.
Cries in the middle of the night in an abandoned hospital, a series of deaths in an apartment building, a cursed jade pendant in an antique shop... Behind each unsolved case, is it the resentment of the dead souls or the unpredictability of the human heart?
Lu Yuan used his spiritual eyes to break through the fog, and Su Wan carefully sorted out the clues. One by one, one light and one dark, in the gap between the yin and yang worlds, they uncovered the bloody truth under the bustling city.
As the case deepened, Lu Yuan discovered that his spiritual eyes were closely related to a shocking secret that had been hidden for twenty years...
