The story happened in the autumn of Fujian frontline 1958. Chiang Kai-shek's landing ship "Tai Cheng" invaded the mainland and was sunk by a torpedo speedboat of the PLA Navy. Wu John, the captain of the enemy ship, and others fled for their lives and swam to the North Island of Unknown Island to wait for rescue. The rescued enemy water ghost coerced fisherman Uncle Cai to sail the boat to the nameless island. At this time, my naval instructor Wang Yongzhi and torpedo soldier Lin Maocai also took captive Sun Gui to the south island of the nameless island. After discovering the enemy's situation, Wang Yongzhi made a decisive decision and launched a political offensive by shouting at the enemy. Sun Gui was lucky enough to sneak to the North Island, just as the cook was beaten. In contrast to our army's policy of giving priority to prisoners, he swam back to South Island to fight the enemy. After the spy repaired the transmitter, he contacted Chiang Kai-shek and knew that he could wait until midnight for rescue. John Wu didn't know our actual situation, so he played a trick of surrendering through fake negotiations and actually feeling our strength. Wang Yongzhi caught on and played along. After nightfall, the enemy will be killed or captured, caught in the net and set sail. The enemy on the landing ship from Kinmen lost air on the nameless island and hurried to chase the fishing boat. At the critical moment, our gunboat arrived and the enemy ship was sunk. Wang Yongzhi and others returned home smoothly.

The struggle against the enemy on the coastal defense fronts such as Fujian has always been the focus of many artists' attention, and so has the film. The film combines the military struggle and political struggle on the nameless island from a unique angle, so that the image of wit and courage and high-spirited and optimistic style of PLA officers and men can be displayed in this struggle. This film is the first film directed by Xie Tieli independently. The lens group is smooth and it begins to show his artistic talent as a film director.