In this story the three kid inventors try their luck at making a rocket to travel across space ... but somehow end up in the wrong dimension - how will they get back home?Reading Champion Graphic readers is a new strand in the Reading Champion programme. Each story follows the adventures of the same set of characters in exciting comic book form, perfect for encouraging reluctant readers. The books have been book banded to support children's reading in the classroom. The Ace Inventors books have all been banded at book band 9 Gold.