Alby: My name is Alby. Now, can you tell me anything about yourself, who you are? Thomas: What is this place? Alby: Let me show you. Hope you're not afraid of heights. Let's go. Come on. This is all we got. Thomas: What's out there? Alby: We only have three rules. First, do your part. Second, never harm another Glader. Most importantly, never go beyond those walls.