P. R. Garcia continues the Europian trilogy in the third book, Engagement. Knowing war is now inevitable, Enok goes on the defensive and prepares to engage and defeat this formidable enemy once and for all. But he knows the real key to the Oonocks' survival is Europa. While the Orbs continue to transform her, she endeavors to find a way to save her people and take them home before this new Terrian leader destroys them all. But before she can find a way to save them, she needs to return to the world above. She tours the complex meeting her people and learning how to exist underwater as a true...