We can't tell you who we are. Or where we live. It's too risky, and we've got to be careful. Really careful. So we don't trust anyone. Because if they find us . . . well, we just won't let them find us. The thing you should know is that everyone is in really big trouble. Yeah. Even you.
The Animorphs and Ax have one true ally in their battle gaainst the Yeerks: the Chee. So, when they discover that the Chee - including their friend, Erek - are in trouble, they have no choice but to help. But the Chee's problem is much deeper than anything the kids could have imagined. It's hidden in the ocean. So far down that no human has ever travelled there - and survived. And the Animorphs realise what will happen if Visser Three discovers the valuable secrets of the Chee. One of which is the Animorphs . . .
