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In the future city "Huanhai City" soaked in eternal rain and a sea of ​​neon lights, a shocking serial strangulation case began to take place. The victims are all virtual idols admired by thousands of people on the VR platform "Dream Wheel", but in reality, they are ordinary people living in loneliness. They were found dead in a minimalist white room, with fatal fiber optic cables wrapped around their necks, and a strange "butterfly" symbol composed of 0s and 1s drawn between their eyebrows. Li Yuan, an old-school police detective who was out of tune with the city, took over the case with the pain of his failure to save his daughter who was addicted to the Internet. With the help of his young partner, he has to dive into a bizarre sea of ​​data to hunt down a ghost that seems to have left no physical traces. As the investigation deepened, Li Yuan discovered that this was not an ordinary murder, but a ritual sacrifice. The murderer considers himself a "liberator". What he strangles is not lives, but the "souls" that he sees as being imprisoned in the virtual world. This is the ultimate showdown that takes place on the boundary between reality and illusion. It is not only an intellectual competition between police and gangsters, but also a profound questioning of the current human world: When the perfection of virtuality is enough to replace the imperfection of reality, what is left of the meaning of our existence?

In Ettelburg, a steam city where technology and alchemy intersect, Julian, a lonely genius watchmaker, is often troubled by an inexplicable feeling of emptiness. Until he met Serafina, an elegant and charming mysterious woman with a hint of sadness in her eyes. Julian falls hopelessly in love with her and is shocked to discover that what beats in her chest is not flesh and blood, but the most delicate clockwork heart in the world.