The story takes place in a city called Eternal Night City, where technology and the supernatural intertwine. The city is shrouded in perpetual twilight, said to be the result of a mysterious ritual performed a century ago. At its center stands an ancient haunted house, the Weeping Spirit Manor. Like a black heart, it beats with an eerie pulse. Many tales of past and present lives are told about the manor. It is said that those who enter can see fragments of their past-life memories and even reconnect with the love and hatred entangling them from a previous life. In Eternal Night City, the tech giant Huanyu Group is devoted to researching supernatural phenomena, hoping to turn them into a controllable energy source, while the ancient Nightwatcher families have guarded the city for generations, stopping anyone who tries to disrupt the balance between yin and yang. The clash between technology and mystery, guardianship and ambition, sets the turbulent tone of Eternal Night City. The protagonists, Lin Fan and Su Muxue, thwarted Qin Tian's conspiracy together and restored peace to the city.
