This programme introduces the main characters and the planet Junkiter. Lisa is a space pilot and she is ferrying the two children, Sam and Amber, to visit their absent-minded Uncle Zak on the planet. On the journey, Sam and Amber have the chance to fly the space ship. This involves dealing with some 3-digit numbers. When they have some problems, Lisa introduces them to Numberella, a space oracle, who is the main source of advice and help throughout the series.