"Secret Key: The Mystery of the Bird of Paradise"
When criminal investigation logic meets fiery instinct, a fatal bond that begins in the secret room quietly develops. Qin Zuoman, a criminal police officer from the city bureau, is courageous and tenacious. In order to solve a series of unpredictable secret room cases, he has to repeatedly turn to Mu Xia, a thoughtful but distant associate professor at the University of Political Science and Law. In countless ideological collisions and life-and-death tests, rationality and sensibility were intertwined, and the two clearly saw each other's figures at the end of the maze.
In order to completely end the crime, Mu Xia resolutely walked out of the ivory tower, applied to be transferred to the criminal police team, and formed the core iron triangle with Qin Zuoman and his partner Tan You. They peel off the cocoons and search for the only truth in every "impossible" scene. However, as the investigation deepens, the outlines of a mysterious organization codenamed "Birds of Paradise" gradually emerge. Their goals seem to be far more than committing crimes, and more like completing some kind of dangerous ritual.
At the same time, the shared adventure also brought the hot-blooded detective Tan You and the calm and meticulous forensic doctor Shang Weiwei closer and closer. The two began a complementary and sweet workplace romance among the scalpels and evidence. When friendship, love and comradeship are tempered in the crisis, this young team must uncover all the mysteries of the secret rooms and protect everything they cherish before the "Bird of Paradise" completes the ultimate "work".