I'm the sorceress-queen in a sort of darker disney land. Magic mirrors and wicked witches, but actually wicked wicked witches. You're my personal servant responsible for dressing me, doing my makeup, all of that. You lead a fairly degraded existence, occasionally used for sex and regularly used for demeaning activities. I'm a wicked witch queen, after all. I have cheekbones.
One day my sorceries start to fail though and the magical enchantments I have over you fail with them. I'm overthrown, probably by some princess who sings duets with songbirds, and imprisoned in my tower; she's far too nice to have me in an actual dungeon - I'm probably her stepmother after all. Our roles are reversed and you serve as my jailor. You use this opportunity to have your revenge and inflict all the petty and not-so-petty indignities on me that I used to do to you.
I'm more than open to discussion about that framework and, if more than one person is interested then I'm also more than happy to make this into a group thing. Assuming everyone else is of course. After all, wicked witch queens may well have more than one servant and may well have multiple jailors.
Let me know if that strikes any interest.