At the master's funeral, the blood-stained police badge was still warm, and Wu Gan received a transfer notice - from the edge police station directly to the city's core Criminal Investigation Bureau. She knows better than anyone else that behind this "exceptional promotion" is the admission ticket that the master has paid for with his life.
The unsolved case five years ago took away him, who was both her teacher and father, and planted a poisonous thorn in her heart. Relying on her fierce determination, she stood out in the new environment and successfully joined the top task force. She originally thought she could follow the clues to find out the truth, but when she was investigating the murder case, she got cold all over: the mark left by the murderer was exactly the same as the secret symbol at the scene of the master's crime.
What makes her even more uneasy are the "coincidences": mysterious informants who always appear at key points, colleagues who are extremely familiar with the details of old cases, and even the time when the task force was established is subtly stuck around the anniversary of her master's death. The faces she bumped into one by one in the new case were placed as precisely as chess pieces, which made her have to suspect that this transfer and grouping were a carefully planned game from beginning to end.
Is the murderer luring her into the game, or is it the last move made by the master before his death?
When the fog of the task force cleared, Shen Yan clenched the bloody police badge and finally understood: the road paved by her master with her life was never for her to seek revenge, but for her to personally tear apart the truth that had been covered up for three to five years in layers of traps and that even her life could not protect.
