Great Britain, 1927. After the adventures of the Jules Verne competition, Everett and Naomi, England's most intrepid children, are back home. But not for long, as someone from their past needs them for a very special mission! In San Francisco, the Secret Service has established a base in the former Alcatraz prison to fight the Universal Axis. A mission led by a man with a passion for technology and a collector at heart: Al Capone himself! Then from Alcatraz Island to an uncharted mysterious island riddled with secrets, deserted villages and... .robots! And more! Together, will they succeed in unraveling the mysteries of their ever-elusive enemy? Discover the second volume of this exciting adventure series! Follow the journey of two ingenious and investigative children, in an early 20th-century setting with a touch of steampunk.