This tale is about a brother and sister who adventure deep into our solar system. Our story begins one night as Helen and Tim get ready for bed in their new space rocket bunk beds… but sleep will have to wait as they magically blast up, up, up into the glittering night sky, leaving planet Earth far below them.
 
Helen and Tim journey here, there and everywhere through our majestic solar system. They soar past the cold rocky surface of Mars as it rises into towering peaks and plunges into deep canyons and glide through a bumpy asteroid belt made of icy rocks. They blast deeper into our solar system, exploring the dazzling stars and astounding planets along the way.
 
But now it really is time to head home! As the rocket speeds towards Earth, Tim and Helen watch the sun rise over their planet.