In Tally's world, your 16th birthday brings an operation that turns you from a repellant Ugly into a stunningly attractive Pretty, and catapults you into a high-tech paradise where your only job is having a really good time. Just before her birthday, Tally discovered that turning Pretty comes with a terrible price. She vowed to accept the operation, but with the understanding that her friends on the outside would rescue her, and let her be the guinea...

Assuming her twins identity, Frey works to destroy her father, but when a rebel uprising strands her in a city that comes under attack, Frey must step out of the shadows to find her missing sister and take action against her tyrant father.