Welcome to the Amazing Automated Inn, home of twelve-year-old inventor Wally Kennewickett, his genius scientist parents, and his dashing dog, Noodles. From the lightning harvester on the roof to the labs full of experiments in the dungeon, the inn is a wonderful place for a curious boy and his loyal dog to live. That is, until President Theodore Roosevelt himself calls the elder Kennewicketts away, leaving Wally and Noodles to face the evil Mesmers, horrible hypnotists bent on controlling the minds of powerful people. It seems the inn is their first stop on the way to world domination . . ....

Wally and Noodles are back to the business of scientific innovation--and fun. In London, they meet a young pickpocket named Dobbin who works for a mysterious criminal called the Tick-Tock Man. Soon they are racing through secret tunnels in a bid to help Dobbin's little sister. Can the brave boy-scientist and his loyal sidekick find the one person who can save her before it's too late? History and technology collide in this humorous series brimming with mad science.