My rating: 4 of 5 stars
Robbi and Azure are chosen from among their classmates to train for Laddertop Academy, a space station that hires gifted children to do maintenance work in the miles of tiny service tunnels. Laddertop space station was a gift from an alien race, but the aliens disappeared soon after. When Robbi begins her training, she finds out that Laddertop holds mysteries and enigmas that could destroy Earth or save it.
Robbi and Azure are excellent characters, with Azure providing some humor and Robbi being the serious-minded protagonist.
I really liked the interaction between all the children in training. They poke fun at each other, make friends and sometimes enemies, but it’s never boring!
The world building is very intriguing! The Laddertop space station is set up in such a unique way, and the humans who run it don’t really understand what it is capable of. I’m dying to know what those aliens are up to, and what role Robbi will play in their plans!
I really need to get my hands on the 2nd volume!