Numberjacks are on their way! In an ordinary sofa there live 10 numbers - the digits from 0 to 9 - who, between them, can team up to solve any numerical problem set them by the bad guys, the devious Meanies. In every episode, the Numberjacks solve puzzles with the help of the agents, who are real children.This debut annual from the Numberjacks will engage adventurous young minds and features seven stories based on the hit TV series, plus puzzles and number activities.