If I were a kid I'd probably give this audiobook an extra star. It is, after all, targeted at children who like video games.
The plot is simple. Lucy must save Overworld Academy from attack from the Skeletons and various other bad guys. It seems that the first suspect is the former headmaster of Overworld Academy. The second suspect is a new student, Maya. As a secondary plot, the Academy is organizing a talent show.
The narrative is simple. No character building and the characters believe the most unbelievable things.
The narration itself was good. It was clear that the narrator was taking her job seriously.
Any modesty issues? None that I could see/hear.
I doubt I would listen to this audiobook again, but only because of the reading level.