Doyle Cleverlobe and Aimee Brightower are two Earthlings who have since been accepted as the new students of the intergalactic Galaxy High, located on the asteroid Flutor -- Wait, they’re not the main stars in the story! The main star is Booey Bubblehead, the sweetheart student who is pretty forgetful. In her own adventure, Booey learns that she has a brother and is the last surviving member of the Bubblehead family. Enthralled by the news, Booey builds a spaceship and flies down to Earth to look for him. When Doyle, Aimee, Wendy Garbo, Gilda Gossip, Beef Bonk, and Milo de Venus caught wind of Booey’s task, they follow her to their home planet, not knowing that her alleged brother is actually the leading ambassador of an intergalactic renegade.