This book is fun, definitely leaning more towards the middle of the middle grade audience. We get to explore the world, be it a beautiful river village in Africa, a treacherous skyscraper in New York, or a mysterious temple in the Mexican jungle. And not to mention the fun of a secret society like SEA - the Society of Explorers and Adventurers. Shinji is a smart-aleck, but lovable nonetheless, and is full of such tenacity. My favorite character was Lucy for obvious reasons - STEM gal with a mechanical mouse named Tinker? I'm sold. Though short, this book packs a punch and I can't wait to read more in the series.

*Thank you to Rockstar Book Tours and Disney Hyperion for the gifted copy in exchange for an honest review*