Do you like superheroes? Do you like pandas? Do you like really brilliant adventures? Then this is the book for you! When world famous superhero Dr Extraordinary gets blown up inside a giant robot, twelve-year-old Sonny Nelson is devastated. A world without heroes is totally rubbish! But things take an even more extraordinary turn when Dr Ex returns and is invisible to everyone except Sonny! This madcap adventure could have only been dreamt up by the crazy minds of Greg James and Chris Smith - part science-fiction, part mission impossible, part mystery that needs solving and a whole lot of fun'