Jiang Ye discovered that Shen Mo was the "ghost" he had been looking for for many years, the one who made his only mistake during the border mission. An approach that started out of curiosity and use gradually evolved into an inseparable dependence. When Shen Mo's past enemies and Jiang Ye's family feud explode at the same time, are the two each other's sharpest knives, or their deadliest weaknesses?