Down the Chimney with Googol and Googolplex

Googol and Googolplex are on a mission to learn about Earth by collecting a number of items including a blackbird’s song, snowballs and a chocolate bar. Pippa and Troy are happy to help, especially when they get to ride to the North Pole in a spaceship. But when they return, Martin, the bully next-door, sees something that he shouldn't.