Half-worlder. Sub-human. Alien. Those are some of the more polite names people use to describe you when your mother is from another planet.

Fifteen-year-old Kristin Magnuson has grown up with these labels. Now she's been chosen to take part in the Youth Ambassador program and train to become Earth's youth ambassador to the Centauri system.

Just as she starts to feel like she is fitting in, she finds herself at the center of a deadly interstellar conspiracy that makes her question everything she thought she knew about herself and her family.