OldEarth is long abandoned now, NewEarth a fresh beginning. Its vassal worlds have spread across the void, not always under all the supervision that NewEarth intended. Though NewEarth itself might lead one to suspect the reasons...
Luc is an illegal child surviving in the lowest depths, at risk from authority. Ailyn is a Legal, daughter of a General. With her friends, Ailyn visits the lower levels for excitement, but they are targetted by a gang. Separated from her friends Ailyn is chased through the sub-level tunnels. Luc, watching, decides to rescue her but it's not as easy as he hoped.
While this story can be read as a standalone it is also another glimpse into the 'lost' history of human evolution in the Worlds Apart collective.