The Tracker's Shadow

In the Sui Dynasty, a disgraced former constable turned private investigator is hired to trail a witness in a treason case. As he shadows the cunning Liu Rong, he discovers a mysterious figure is shadowing him in return. Their deadly game unravels that the supposedly perfect crime was merely a fragile product of luck and the accuser's dullness, offering the investigator a chance to rewrite his fate on an unlimited path.