Rudo, living in the slums of a floating town, is one day falsely accused of murder, and his wrongful conviction leads to an unimaginable punishment. Exile off the edge and into the abyss with the rest of the trash.
To discover the truth and seek vengeance against those who cast him into the abyss, Rudo joins a group known as the "Cleaners" and their battle against the hulking trash beasts of the abyss!