Amber and Sam find Uncle Zak loading the Wattbots with 100kg of scrap. Sam does not understand Uncle Zak's phrase 100kg or 'near enough' and consequently overloads one Wattbot causing a pile-up. Amber calls Numberella who demonstrates what is meant by the 'nearest hundred'. While Uncle Zak is preparing the spaceship for take off, Amber notices a flashing warning light and, by rounding the numbers involved, realises the ship is dangerously overloaded. The launch is aborted just in time.