One

100 years after the destruction of all human civilization at the hands of a nuclear war, the people living in a bunker endearingly nicknamed the "ark," resources have been contaminated by a sickness quickly spreading through the bunker. The few unaffected, and possibly immune, inhabitants realize that in order to survive they must go above ground.

Kalen has dreamed of the Above for years. He's always been curious of the crisp air or the soft grass he'd only read about in stories. Many people wrote him off, saying the Above was a lifeless wasteland with air too dirty to believe. Now he has no choice but to go to the Above.