Cen Yujin never thought that after living for 18 years, the nightmare she dreamed would be the scene of a murder.
An enthusiastic report of the crime revealed the prelude to her becoming a mysterious foreign aid to the task force.
As the cases were solved one by one, the boss of the task force, the technical brother and Cen Yujin discovered the similarities between the cases.
The trio, who were about to track it down, found themselves in a very dangerous position.
Should we be responsible for a sense of justice, or should we keep our secrets rotten in our hearts?