Siu is a competent, intelligent, smart Hong Kong detective. The case of money smuggling and counterfeiting between Mainland China, Hong Kong and neighboring countries has always happened. Investigator Wong who works under the gang, together with Siu, decide to join forces to end them all.
The Nationalists have a secret mission of sending a truckload of coins into the mountains but the commander of the army unit guarding the warehouse where the coins are stored wants them for his own use.
At the Sino-Vietnamese border, a group of nine people headed by a deputy company commander and a platoon commander braved the enemy's intensive artillery fire to the No. 3 post, a natural cave, and began three months of hard fighting.
