Joe Jackson is an adventurous twelve-year-old boy from the boring English town of Highcross. His exploration of the site of an unexploded World War II bomb will see the beginning of the most amazing experience of his life where he will meet up with Max, an extra-terrestrial from the planet Proxima Centauri b.

Joe, Max and their friends, Mo and the Robinson family will embark on an adventure through time and space where they will encounter dinosaurs, Roman legionaries and medieval knights as they try to stop the evil and ambitious Dardan from taking over Planet Earth