Starrdust inherited the throne of the galaxy from her parents once they died (they died when they were trying to help an alien race move to a new planet and the sun exploded while they were near it). But Starrdust is just a kid (16 earth years, 16000 galactic angel years) so her aunt who was in line for the throne until Starrdust turned fifteen (15,000), thinks that she can overthrow Starrdust. She reasons that if Starrdust is queen, she should go down to earth, to help the humans with their global warming problems. So Starrdust goes down to earth, but then her aunt traps her there! She has to figure out how to get back up to her galactic angel home with the help of a few friends she made along the way.