Have you ever had a terrible secret you didn't want anyone to know? Petri does and it may get her killed. Life is hard on Upworld, especially for the residents of Under City, and it's even harder for those who don't fit in. Petri has alway been different and now those differences may cost her life. Her one hope is to leave the only home she's ever known while evading the mob that's calling for her blood. But Petri has never been outside of her sector of Under City, never mind off the planet. And the laws of Upworld forbid people like her from leaving. Will Petri overcome the odds and make good her escape? Maybe...with a little help from her friends.