vIn the year 2140, mankind's reckless exploitation of the environment has sparked a planet-wide catastrophe that has shielded the sun from view and all but ended human civilization on earth. Only a small number of elites possessing power and technology have been able to thrive, building a magnificent, organic city named Ecoban. Ecoban the city grows by itself like a living plant, utilizing its Delos System to transform carbon compounds into useable energy. Jay is a 19-year-old female trooper of Ecoban who guards the city against the incursions of outsiders.

Thousands of refugees have come to Ecoban seeking asylum, but the elites have barred their entry to the city and forced them to settle in the surrounding Wasteland. The refugees have become Ecoban's workers, known as the "Diggers," and are forced to mine the Wasteland for the carbonite needed to feed Ecoban. On patrol in the Wasteland one day, Jay witnesses a gigantic industrial accident orchestrated by Ecoban's corrupt leaders against the refugees. Upon seeing this act of cruelty, Jay's loyalty is put to the test. When she then encounters her childhood sweetheart SHUA leading a rebellion against Ecoban, Jay must make the ultimate choice – whether to live for duty, or very possibly die for love.

Shua goes to warn a group of Digger freedom fighters that his incursion into Ecoban may lead to retaliatory strikes by Ecoban. Despite Shua's warnings, the rebels put their plan into action -- but it turns out to be a deadly trap that leads the Ecoban troops to the headquarters of the resistance. Later that night, Jay flees Ecoban to be with Shua. Joining forces in rebellion, Jay and Shua risk their own chance at happiness for the chance that the clouds may clear, and the people of Earth might see the blue sky for the first time in their lives.