Qin Xiaoyang and Tang Shi are "iron buddies" who grew up together. An accidental incident led them to two opposing camps. Qin Xiaoyang accidentally obtained the "key" and enlisted in the "Tianlang" special forces, which mainly strengthens the army with computer information network talents. With the cooperation of network expert Zhu Litong, he sneaked into the dark web platform "Hell's Gate" of the international terrorist organization, and together with the big data expert Jiang Mei, the special forces member Duan Yuzhe and the old generation of anti-terrorist elites, he fought wits and courage with the terrorist group, thwarted terrorist incidents again and again, and finally, with the help of Tang Shi, he destroyed the dark web platform in one fell swoop and hit the international terrorist organization.