I thought up some new ones, so here goes.
1. Im a new FBI agent, and have to get information on someone important, a weapons dealer or criminal. As he has a thing for slavegirls, Im talked into being 'sold' to him, to listen to him and gain information, only he somehow finds out who I truly am and vanishes with me.
2. Im kidnapped while on holiday in the Ukraine, or one of the former states, maybe even Russia, and sold to a Mafia or Mob leader, maybe even someone high up in the government as their pet, companion, Mistress even.
3. Holidaying at a beach resort, perhaps in Mexico, Im snatched and kept by the owner of a bar as one of his newest girls.
4. I could be a lost tourist in a US, canadian, or European city thats lured into a car, and kept as a wealthy families captive maid, or a playtoy/companion for their 18yo son or daughter.