Description Zack is a planet-hopping pro-but a return to Earth results in some unexpected puppy trouble in the tenth Galaxy Zack chapter book adventure. Zack is headed back to Earth for the first time since moving to Nebulon. He can't wait to see his best friend Bert and show his new friend, the former bully Seth Stevens, all around his old stomping grounds! Luna's excited too. A little too excited. When the pooch escapes and goes missing, sightseeing plans take an unexpected turn. Will Zack find Luna before he has to head home to Nebulon? With easy-to-read language and illustrations on almost every page, the Galaxy Zack chapter books are perfect for beginning readers.