In Shanghai during the Republic of China, it was dark at night. Bizarre deaths occurred frequently in the concession, and the souls of the deceased were mysteriously removed. Shen Muyan, who appears to be a social news reporter but is actually a member of the "Night Watch" organization, was ordered to investigate the case. He has the power to control light and shadow, and he also bears the blood feud for his father's death. During the investigation, Shen Muyan unexpectedly reunited with Su Manli, a musical actress with whom she had a deep love and hatred. She is also a member of the "Night Watch" and has the ability to seduce people with her singing.
After a fateful reunion, past misunderstandings and estrangements were forced to shelve in the face of the murder, and the two had to join forces. The clue points to the mysterious preacher Blake, who uses the church as a base to perform evil black magic rituals in an attempt to control Shanghai's supernatural forces. Shen Muyan gradually discovered that Blake was the culprit who caused his father's death that year! Hatred intertwined with the truth. When Xiaobao was seriously injured while protecting them, Shen Muyan and Su Manli finally put aside their grudges and activated their powers. With the support of Lao Wu, the leader of the "Night Watch", they broke into the church and vowed to tear apart Blake's mask of hypocrisy and crush his evil conspiracy! This is not only a contest between superpowers, but also the final choice between their justice and faith, which will also completely change the fate of the Magic City.
