Lu Zheng, the former captain of the special operations team, lived incognito in a border town after retiring and worked as an ordinary truck driver. One night, in order to rob the source of a batch of contraband, local snake leader Zhao Sanjin intercepted Lu Zheng's vehicle and mistakenly took his comrade's orphan, a 15-year-old boy Xiao Shitou, as a hostage and brutally killed him in the conflict. Lu Zheng was framed and imprisoned, where he was tortured. Three years later, Lu Zheng was released from prison and found that the forces that framed him had expanded into a behemoth that spanned both black and white. He no longer escapes, and uses his old special operations skills and the information broker Lao K he met in prison to dismantle the enemy's forces layer by layer with his small and powerful skills.