This was a light, fun read, great for that midway group between leveled readers and chapter books. Zeke is a likeable enough main character, but he seems to have lots of fears and aversions. Grace Chang was a villain for no other reason than the story needed one, which was unfortunate. Maybe if there was some history there to explain the animosity that would change things but as it stands, it was kind of off-putting.
Overall, I believe this would attract reluctant readers (especially boys!) and be a decent bridge into more chapter books. Grades 2 and up.