He is the last night watchman of the underworld, holding a three-foot green sword in his hand, and vows to protect the lost rules of the world. When the transnational dark web broke the underground order, Shen Tiesheng led his old team to fight against the foreign gangs armed with technology. The battle between sword and code, loyalty and capital - this is not only a battle of dignity, but also the last punch of one era to another.