Zack learns that appearances aren't everything when he has an up-close-and-personal monster encounter in this chapter book adventure. Zack is shocked when he goes to school one day and finds a monster in his seat! Who/what is this creature? At first Zack is scared, but he soon finds that this monster, Al, is kind and friendly. Zack and Al become fast friends, and Zack goes to Al's planet and meets all kinds of other monsters. Zack realizes that just...

"Zack is thrilled when his best friend on Earth, Bert Jones, visits for the weekend. But when Zack introduces Bert to Drake, his best friend on Nebulon, trouble begins!"--

When summer arrives on Nebulon, Zack discovers that his best friend, Drake, is afraid to learn to swim and decides to teach him before they go on a trip to water-covered planet Araxie.

Although Halloween is not celebrated on the planet Nebulon, Zach, a boy from Earth, discovers that ghosts may be real.

Zack loves everything about his new planet, Nebulon, until there is a complete cosmic blackout and he must try to function without his Indoor Robotic Assistant and hyperphone.

The Nelsons are heading for a winter vacation on a great new planet with Zack's best friend, Drake, and the boys can't wait to dive into the winter games, but at the resort, Zack realizes there are a bunch of hurdles he wasn't prepared for.