Addie, officially known as Star Girl, is having some trouble fitting in at the Space Education and Action School, but she hopes her second mission will be a success--she and Grace (Comet XS), who does not trust her, must seek out the source of the pollution that is poisoning the intelligent vine aliens on the planet Plantagan.
General Note
"First published in 2011 by Macmillan Education Australia Pty Ltd."