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Detective Qin Feng, aloof and arrogant criminal psychologist Yang Qing who can see through people's hearts, and Shen Nan, a gentle and sinister genius forensic doctor, are a trio who are bound to solve the case.

After the ancient warriors from different dynasties took the form of human beings, they walked around modern society, looking for companions and energy, and fighting for territory. Because of conflicts in cultural concepts, they also needed to evade pursuit, but they did not realize that they had a deep bond with human beings. Lin Tian is a sword, and he desperately hopes that the ancient weapon can truly integrate into human beings, so he will deal with his companions and enemies for this purpose.