It's 2067 and the world has become virtually uninhabitable with all the pollution and toxins created by mankind. Ruling classes live holed up in the cities and workers live in Stations, safe from the outside world. But one day Station 27 is taken over by rebels. Nero, from the ruling classes, and Sacks, a worker, find themselves thrown together as they're captured by the rebels, their common enemy. As they begin to discover the terrifying truth about their world, the two children get separated and find themselves in great danger.