World-class detective Chen Yi traveled to a parallel world and found himself handcuffed to a chair in the interrogation room.

The first thing he has to do is to clear himself of the suspicion of murder.

Bizarre cases and unspeakable human hearts.

From the suspect to the criminal police, from the superintendent to the superintendent, the criminal investigation melody of punishment is played at every murder scene.

This is the story of a criminal investigation expert who reduces dimensions and cracks crimes, and gets promoted in a new world.