In 2000, rookie prison guard Luo Weimin uncovers evidence linking convicted murderer Wang Guoyan to several unsolved cases. Eager to make his mark, he teams up with fellow guard Zhao Zhonghe to investigate, only to fall into a deadly trap. As mysterious deaths occur around them, a tense, decade-spanning investigation ensues.

Ce synopsis est en anglais : nous ne l'avons pas encore traduit.