A car accident three years ago gave forensic assistant Shen Du the ability to "hear the last words of the deceased" - at the cost of losing one day of life every time he uses it.
He was secretly hired as a "special consultant" by the City Bureau's Criminal Police Team, specializing in cases where "there are all the witnesses and physical evidence, but something feels wrong."
The first case: a embezzler who was convicted of "suicide out of fear of crime". His last words were - "The account book is behind the third painting. I was silenced."
The second case: A female college student who was deemed to have "accidentally fallen from a building" had her last words - "He is not my boyfriend, he is the person who is stalking me."
The third case: A "murderer" who had been executed had only five words in his last words - "Say thank you for me."
Every time a case is solved, life expectancy is increased by three days; every time a wrong investigation is made, death is one step closer.
As the case became more and more complicated, Shen Du discovered that the last words of these seemingly unrelated deceased people pointed to the same secret: the car accident that made him "resurrection from the dead" three years ago was not an accident at all.
And his heartbeat was getting slower day by day.
