Densuke Hamada, aka Hama-chan, is an ordinary businessman working in a construction company, except for one thing. The fishing. It's the first priority in his life. Hama-chan and Suu-san come to Nagasaki for the opening ceremony of the bridge constructed by Suu-san's company. There Hama-chan meets Bob, an American soldier who is also crazy about fishing. When Suu-san returns to Tokyo, he is told Hama-chan has become missing...