Inside The Wall by Caleb VanSteenwyk (chromebook ebook reader .txt) 📕

All that's left of the world is one secluded, walled city. Soon, it was seperated into two sectors - Nobles, and Peasants. The Nobles have all the technology and luxury, while the Peasants fend for themselves. When a Peasant Rebellion broke out, the Nobles took Peasants off the streets, made them stronger, faster, and controlled by the Nobles to fight off the Rebellion. When Bryce's brother gets taken away, he has to get him back.