Dax Masters has everything he could wish for-great friends, a good handle on 7th Grade, and a science community to run. As head of the Earth Moves Project, Dax has inspired other kid scientists from around the world to share their observations. His schedule is full, but that doesn't stop him from signing up for a new extracurricular class, Environmental Studies.

Dax hopes he can sail through the new class by using Earth Moves to expand on what he's learned about tectonic plate movement. But when a new problem presents itself, Dax can't ignore his instincts. The planet's oceans are in trouble, and with the help of his classmates, Dax has once again identified a potentially catastrophic global crisis others have missed. This time, though, he has to prove to himself that he has what it takes to find a solution.

Join Dax and his fellow kid scientists on their mission to discover what's gone wrong with Earth's oceans and how humanity can stop it-before it's too late.