Superjail!

Superjail is the world's largest, most brutal prison. Built beneath a volcano, it is routinely the site of riots and murders. Its megalomaniacal warden doesn't like conventional prisons and has chosen to make his facility unlike any other. The warden's assistant, uptight Superjail accountant Jared, originally arrived at the jail as a prisoner but got his job after impressing the warden with his intelligence. Even the resident doctor gets in on the brutality of Superhail, for he regularly performs grotesque experiments on the inmates.