In this, I would be playing a tourist in europe who gets lost one night and stops by a house for directions. Given a laced drink, I wake up to find myself the newest bondage pet, maid, or slavegirl of the owner. I could even play a male character who is feminized by them as much as possible if that works better.
I could even go somewhere for a bdsm experience, only to find out that it will never end for me.
Playing a male character,I could visit a master or mistress to be feminized for what I thought was a short while, but he or she decides to keep and enslave me, keeping me as their captive maid.
Either one works.