Aachi and Ssipak (2005)

In a dystopian future, excrement has become a valuable energy resource and is hoarded by a powerful corporation. Aachi and Ssipak, two small-time criminals, get caught up in the black market trade of human excrement. As they navigate through the dangers of the underground world, they find themselves in a battle against the powerful corporation, facing off against porn stars, mutated addicts, and more.