Month after month, a new girl arrived in the Box every month. all of them were teenagers, all of them couldn't remember anything. First Amelia, then Michelle, then Harriet, then Sonya, and more. They were the Gladers.
Amelia was the leader of the Gladers, and Keeper of the Runners. Michelle became a Runner, Harriet the Keeper of the Builders and second in command, Sonya the keeper of the Track-hoes.
Everything was good, and the girls built a small civilization in the Glade. There were a few deaths over the years, but they knew they couldn't let that affect them. The Gladers thrived.
Then it all started changing when Rachel arrived in the Glade.