This is Marina - Acumen is a computer who arrested you because of various crimes you may have committed. And it's not always fair. Everyone has a lifelong sentence, and since we're at the bottom of the ocean, there's no way out of the dome... Sometimes there are glitches in the system, and people disappear, but- that's it. It's not like a typical prison, since he's made it comfortable with beaches and pizza shops and such, but you're still trapped here regardless. I'm sorry.