I never really finished this line i don't think, but I'm pretty sure it starts with you doing the mining mini game, and occasionally when you find the rare silver and gold ores, the prison bully/boss whatever shows up and demands you give it up. If you do it enough time eventually for some reason you need to start giving him one of your work order making you have to get 2 a day since he shows up first then the guard. Or you can choose to not give it up and either fight them, in which the guard will show up, and eventually get over taken in what I assume is infinite battles. After you'll get put into a magic sealing collar. Or you can choose yo goto the guards for help, but since it's this game the guards will believe the other guys and punish you for stealing.
Not sure where to go from there, but that's the start of that line.