2113. In Jenna Strong's world, ACID - the most brutal, controlling police force in history - rule supreme. No throwaway comment or muttered dissent goes unnoticed - or unpunished. And it was ACID agents who locked Jenna away for life, for a bloody crime she struggles to remember. The only female inmate in a violent high-security prison, Jenna has learned to survive by any means necessary. And when a mysterious rebel group breaks her out, she must use her strength, speed and skill to stay one step ahead of ACID - and to uncover the truth about what really happened on that dark night two years ago.