When forensic doctor Gu Yunshen and profiler Jiang Xubai are forced to partner up to investigate a series of massacres with a strong sense of ritual, they face not only a perverted killer "artist" with high IQ, but also a philosophical lunatic who is obsessed with "purifying" sin through killing.
Every corpse is a code, and every scene is a twisted work of art. When the gears of truth finally clicked, they thought they had captured the real murderer, but found that closing the case with their own hands was the perfect ending to the demonic experiment.
And a new diary has appeared, with the title page saying: "The seeds have been sown, looking forward to the next me."
——How should they break this ultimate game with human life as the bargaining chip?
