Celine, a thirteen-year-old girl, has lived her entire life in a small human colony on Mars. She is fascinated by two older girls from Earth, Anna, and Nina who are visiting her beloved planet. They were beautiful and wore the latest fashions, and though her parents did not think they were good role models, Celine wanted to be just like them. When she learns that she must go to Earth to visit her grandmother and that she will be on the spaceship to Earth with the girls, she is determined to make them her friends. However, the girls bullied her. They didn't think an awkward Martian girl was good enough to be their friend. But when one of the girls and Celine were abducted by strange beings from another galaxy who merely saw humans on the same level as pets, the girls had to set aside their differences to gain their freedom or risk being lost among the stars forever.