In the 21st year of the Republic of China, a series of murders occurred in the French Concession, and all clues pointed to the Xu family.
Detective Song Heng was ordered to investigate Xu Qinghe, the second young master of the Xu family.
The man was cold and distant, like a piece of ice that couldn't hold any heat.
But Song Heng happened to see him - he clenched his fists in a deserted place and dug his nails into his palms.
After investigating the case, Song Heng discovered two things:
The secrets of the Xu family are far more dangerous than the murder.
And he himself cared about that person far more than he imagined.
He investigated all the cases in the French Concession. Only Xu Qinghe, he never found out in his life.
