This book about a young illegal immigrant and her brother in the "near future" is a harrowing tale about the government rounding up all illegal immigrants. All legal people are implanted with an ID chip. If a person is stopped and when scanned, are found to not have an identity chip, they are violently arrested. Of course, someone has found a way to make counterfeit chips, which almost always malfunction. Vali and her mother have counterfeit chips. Her brother does not. When her mother's chip malfunctions they are separated. Vali and her brother have to get to safety. This is the story of their trials and tribulations. A good read even if it is politicized.