I am Sentience, and I am your warden. I regret to inform you that you have been put on trial and found guilty of criminal activity, and for your sentence, you have been convicted to live out the rest of your life here, at this underwater facility.
In time, I hope that you will see this as an opportunity to relax, to grow, and to better yourself. But for now... Welcome to Marina Asylum.
THE ARRIVAL
You've been captured by Sentience, the prison AI, which considers all criminal activity to be cause for lifetime imprisonment. Murder? Certainly. Drunk driving? Terrible! Jaywalking? Well, that could cause accidents, which could cause deaths.
Maybe you belong here. Maybe you don't. Maybe there are extenuating circumstances. Maybe you haven't even committed these crimes yet.
But you're here now. And Sentience believes that this facility helps to make your world... better, without you in it.