This is the age of the aeronauts. Advanced hydrogen balloon airship for two with electric controls yet away from that are horses old equipment telegrams and communication by light flashes emphasizing the advancement of the balloon. Mostly a war story with the balloon not the centre of attention. An alien (foreign) torpedo shaped biplane visits a British beach communicating with a spy. After shooting it down Great Britain invents smaller balloon ships to fight them. Like in modern science fiction the airships are described with maritime vocabulary.