After a recap of their Journey Around the World in 80 Days, Lord Guinness introduces Willy Fog to Professor Lidenbrock, who believes it is possible to travel to the Center of the Earth. Fog and Lidenbrock decode a note written by Icelander Arne Saknussemm detailing his own journey, and the pair decide to follow in his footsteps. The disbelieving Sullivan - now running a Betting Shop, having been sacked at the end of the previous series - refuses to believe it possible and bets another 20,000 pounds that Fog will fail. The villainous Transfer reappears and offers to help stop them. Again.