You awake to find yourself lying naked on cold stone, your wrists manacled behind your back. An iron collar is heavy around your neck. Opening your eyes you see that you are in a small pen, perhaps 4' wide by 5' deep, and 4' high. It contains only yourself and two wooden bowls, one of which is half full of water. You are surrounded by stone on three sides, but to your front is a padlocked grille of iron bars. Through the grille you see a lamp-lit passageway, about 10' across, and set into the wall are other pens, like the one you now inhabit. They too hold women, likewise naked and bound. Some look around with frightened eyes, others gaze dully into space.
Your heart sinks as you realise that you have been captured by the Iron Ring. You are now a slave...