Just two fantasy games that came to me:
1) A young Paladin, part of the escort of a King is captured after the evil Sorceress Queen's men ambush the group and slaughter all. The Sorceress Queen however takes special interest in the Paladin and brings him along as a toy and source of amusement/information.
The Paladin will do his best to defend his honor/cause and sway the Queen to his view. The Queen however will torture, tease and use every means at her disposal of turning the Paladin. I'd imagine bondage, humiliation, sexual 'fun', etc would be involved but also morale debates and matters of faith/dedication.
The Queen should be dominant but that doesn't mean the roles can't turn around and the Paladin won't be able to escape... with the Queen as a captive.
The Paladin might also be an Aasimar. (half-celestial)
2) A story focussing on the intrigue and backstabbing in the Underdark, but also the raids to the surfaceworld.
Basically i'm looking for a female Drow. Be she Sorceress, Matron or something else.
I'd play her bodyguard as we try to survive the intrigue and rivalry that plagues Drow society.
Having them be siblings or mother/daughter is an option also.