A series of murders occurred in Jiangcheng, and all evidence pointed to the young architectural designer Lin Xiaosheng. But every time a crime occurs, Lin Xiaosheng has a perfect alibi - surveillance video, multiple witnesses, and even mobile phone location data all show that he has no possibility of committing the crime.
Criminal investigation captain Mu Qingyun, a police elite known for his strict logic, encountered a truly difficult opponent for the first time. When he investigated in depth, he had to turn to the calm and rational female forensic doctor Liu Ruyan. The two gradually discovered that there was a conspiracy of time and space hidden behind this case that was far beyond imagination.
When physical reality and digital evidence contradict each other, and when the ticking of the clock is no longer reliable, Mu Qingyun and Liu Ruyan must race against time itself to uncover the truth behind the perfect alibi. And the truth is often more disturbing than appearances.