In The Muscle Machine, Gordon wants to stop the school bully, Ted, pushing people around, so he sends off for Mr World's muscle machine Soon Gordon's muscles start to grow and grow In The Banana Machine, The banana plantation where Patty lives with her Aunt Bat is struggling to survive, so Patty invents a banana machine Will Patty's machine save the plantation? In The Joke Machine, Jeffrey uncovers a joke-producing machine in Mr Prendergast's junk shop Soon everyone wants one of its jokes, except miserable Mr Jenkins in the shop next door But who will get the last laugh?