the numberjacks are animated characters - the numbers zero to nine - who live in a sofa and solve problems outside. each episode has the same structure. at the beginning of the episode, some of the numberjacks will be engaged in an activity that will have relevance to the problem that is later discovered. then an "agent" (a live-action child) will call in and describe the problem that is occurring. one or two of the numberjacks will go out into the real world to solve the problem, while the remaining numberjacks stay in their base and watch their progress on a screen. as soon as the problem is understood, 5 will worry about all the things that can happen. in the second series she does not worry about the dancing cow quite so much.