Japanese anime feature. In a post-apocalyptic world, where Earth's ecosystem has been fatally disrupted by spiralling pollution, a select few live in the paradise city of Ecoban, while the rest of the population live under bleak, grey skies. When Ecoban security officer Jay begins to suspect the injustice of this, she finds out that her old friend Shua is planning a secret insurrection, and together they plan an attack on Ecoban's main power system.

The year is 2142. After a catastrophic environmental disaster a small number of elites have built an organic city called Ecoban. Its very exixtence depends on the work of the "Diggers"; refugees who live outside of the city and mine the wasteland to feed Ecoban's energy consumption. Exploited and fighting for their lives, their only hope is rebel fighter, who must infiltrate the city and escape with secrets, to win the freedom of the slaves and save planet from total destruction.