It is produced by Open Mind Productions for the BBC and features a mixture of computer-generated animation and live action.

They normally spend their everyday lives inside a sofa until a call comes in from real-life child Agents, who report problems that need solving.

One or two of the Numberjacks fly out on location to investigate the issues, that are normally caused by the show's main antagonists - the Meanies.

After much fun, adventure and powerful thinking, the Numberjacks win the day – until next time.

When a meanie is defeated, the end of their theme song will play; this happens in most episodes, but not all of them.