In this middle grade novel, Ellie Caldwell — a Cambridge graduate student and wildlife conservationist—adopts a kitten named Boo. Between lectures, Ellie heads to the countryside for camping trips, her Instagram-anointed 'adventure cat' in tow. On rocky trails, Boo discovers that, like Ellie, she has a passion for the natural world, and because she's able to communicate with all animals, she can relate their challenges back to Ellie.

But there's a serious problem: whenever Boo tries to tell Ellie something, all Ellie hears is "Meow." Can they work out a communication system, and in doing so, save endangered animals from harm while encouraging public support of nature and wildlife?