Travel to the scene of a world-famous murder. If you can't solve the case, you won't be able to come back.
Lin Mo, a criminal psychology expert, and Su Qing, a female assistant from the history department who is extremely powerful, were selected by the "Space-Time Arbitration Tribunal" and forced to go to the sites of historical unsolved cases such as the Zodiac Killer, Jack the Ripper, and Trojan Horse.
Clues rely on reasoning, physical evidence relies on eyesight, and survival relies on ability.
Others traveled through time to fall in love, while they traveled through time to risk their lives on the edge of a knife.
The murderer is hiding in the shadow of history, and there is only one thing they can do - find out the truth before the countdown reaches zero.
