Retired soldier Zhao Lingyun wanted to hang out at the express delivery station, but he was besieged by a group of foreign special forces crossing the border as the 'highest threat target'. He casually picked up the wrench and brought down the entire team, but he didn't know that the biochip implanted in the opponent's body had transmitted the battlefield footage back to the Pentagon. Jiang Wanqing, an agent of the Strategic Bureau, tracked the chip signal to find Zhao Lingyun, only to discover that the one he casually blew up was the enemy's ace 'Cobra' commando. At the same time, arms dealer Ruan Hongying came to the door with an assassination list, and the old squad leader Han Tiezhu was secretly investigated by his superiors. A secret war affecting the global military industry officially started from the moment Zhao Lingyun unscrewed the mineral water bottle.