It's a slow day in the big city, until disaster strikes. Numberblock Three has lost one of her red juggling ball buttons! Can detective Numberblock One help Three solve this mysterious case by telling the time? Will Three ever juggle again? It's a sticky situation, but only time will tell if One can find out where the missing ball is and close the case.

Numberblock Seventeen is hosting a big area art challenge. Numberblocks One, Three and Four need to cover a canvas with shapes - without leaving any gaps - to find the area. But what happens when they run out of shapes for the biggest area challenge?