It is the cusp of World War I, and all the European powers are arming up. The Austro-Hungarians and Germans have their Clankers, steam-driven iron machines loaded with guns and ammunition. The British Darwinists employ fabricated animals as their weaponry. The Leviathan is a living airship, the most formidable airbeast in the skies of Europe.

Tally Youngblood is quickly approaching her 16th birthday and the mandatory pretty-making surgery that accompanies it. But Tally isn't sure if she wants to be a placidly happy Pretty. When a top secret organization threatens her with remaining Ugly forever, she reluctantly spies on the rebels who have refused the surgery. They think it changes more than just looks and are working on a cure. But they need someone to become Pretty to test it out.

A year ago, Cal Thompson was a college freshman more interested in meeting girls and partying than in attending biology class. Now, after a fateful encounter with a mysterious woman named Morgan, biology has become, literally, Cal's life.

The only thing that matters in the world is fame, and all people are constantly monitored as though they are contestants in a global talent competition. In the blink of an eye, absolutely anyone can suddenly become famous.

Strange things are happening: old friends disappearing, angels (or devils) clambering on the fire escapes of New York City. But for Pearl, Moz, and Zahler, all that matters is the band. As the city reels under a mysterious epidemic, the three combine their talents with a vampire lead singer and a drummer whose fractured mind can glimpse the coming darkness. Will their music stave off the end? Or summon it?

Tally never wanted to be Special, but some talents cannot be denied. Specials keep the Pretties happy and naive, keep the Uglies wishing to be Pretty and - most importantly - keep the Smokies powerless. But their latest mission is to end the New Smoke forever, and there is still a little part of Tally that is telling her to think for herself, that remembers a time when Tally lived happily among the Smokies. Maybe the Specials aren't really protecting anyone but themselves.

Tally Youngblood never felt like the other Pretties - she almost didn't become one. But Tally isn't the only one who feels like she's missing a part of herself. After uncovering sinister clues about the Pretty surgery, she stumbles upon a possible cure for Pretty-mindedness and a possible escape from the city. But the cure could have deadly consequences.

Ever wonder who was the first kid to keep a wallet on a big chunky chain, or wear way-too-big pants on purpose? What about the mythical first guy who wore his baseball cap backwards? These are the Innovators, the people on the very cusp of cool. Seventeen-year-old Hunter Braque's job is finding them for the retail market.