The super-secret mission to the center of the moon (pie)

"After discovering in book one that they had every reason to feel a little bit different than their peers, Edwin Edgefield and the rest of his alien-on-earth crew are primed and ready to learn all they can about their home planet. Unfortunately, that planet has been destroyed, and the one person who can help them find out where they came from -- Maureen (yuck) -- has no intention of helping. In fact, she has just taken off in a rocket ship bound for the moon, where the enemy Yaks awaits with a new version of her planet-destroying machine, this time aimed at earth. It will take every bit of Edwin, Julie, Kimmy and Dilip's super abilities -- both mental and physical -- to stop Maureen this time. Can they pass through the gauntlet of tests Maureen has set for them and infiltrate the Yaks' secret moon base before the bad guys can power up their earth-blaster, or will Maureen and the Yaks succeed in their vengeful mission?"--