A world divided into classes where social status is considered absolute. A boy named Crow, who is forced to work as a slave with no freedom at the bottom of the hierarchy, is entrusted with a gizmo, a device that will allow him to fight against the world. Overcoming the walls that separate the classes, the resignation, discrimination, and madness that permeate this country, the boy rises to the top. A rebellion to grasp pride and freedom begins!!