The story follows two young boys, Jack and Fred, who are passionate about wireless telegraphy. They build their own wireless set and become proficient operators. Their skills come in handy when they pick up a distress signal from a ship in trouble at sea. The boys quickly realize the severity of the situation and take it upon themselves to help.Using their wireless set, they manage to relay the distress call to the authorities, who organize a rescue operation. The boys' quick thinking and technical prowess play a crucial role in saving the lives of those on the ship. Throughout the story, Jack and Fred display courage, resourcefulness, and a sense of duty, making them exemplary heroes for young readers.