Centres on the adventures of a group of anthropomorphic numbers. They go about their everyday lives inside their sofa until a call comes in from a real-life child Agent, who reports a problem that needs solving. One or two of the Numberjacks fly out on location to investigate. The Numberjacks have to work out how to put things right, and thwart the dastardly intentions of the Meanies.

The Numberjacks face their greatest challenge yet when their holiday in the sun goes wrong, thanks to the cunning plans of all five meanies working together.

Centres on the adventures of a group of anthropomorphic numbers. They go about their everyday lives inside their sofa until a call comes in from a real-life child Agent, who reports a problem that needs solving. One or two of the Numberjacks fly out on location to investigate. The Numberjacks have to work out how to put things right, and thwart the dastardly intentions of the Meanies.