The bloody iris symbol of Lincheng's serial secret room murders led to a narrow encounter between Chang Jiang Yi, a criminal investigation team member who insists on "physical evidence first", and Jiang Shuyou, a criminal profiler airborne from the provincial department. One is a cold-faced tough guy who has suffered the trauma of being an undercover agent and is used to fighting alone, and the other is a daughter of a martial arts family with a high IQ and high martial arts skills who is good at micro-expression games. The fierce collision of case-handling concepts has led to a tacit understanding in the unraveling of the investigation.
From a ten-year campus corpse case to a transnational drug trafficking network, from sneaking in the police station to undercover life and death, they lead the crime team to face the deadly threats of serial killers and the "hidden nest" of transnational criminal groups. Every investigation strictly adheres to legal procedures, and every confrontation is thrilling at every step. Only Jiang Shuyou can cure Jiang Yi's PTSD, and only Jiang Yi can protect Jiang Shuyou's sharpness. Misunderstandings, suspicions, and tests of life and death are intertwined, and extremely sweet and sad emotions heat up in the hard-core investigation.
When the ultimate villain "Viper" emerges and the dust-laden truth of the sacrifice is revealed, the detective lovers will finally break through the darkness together, guarding the lights of thousands of families with the sword of blazing love and justice, and write a passionate criminal investigation legend walking side by side.
