What is your darkest fantasy about your partner?

Take her to a wife swapping party where a select few wives are taken to the basement where they are auctioned off to BDSM masters for a week as his slave. She will be trained videoed shared with his friends, used as a play thing. Bound, punished when she doesn’t obey fully or if she doesn’t pleasure whoever she’s shared with. Only allowed pleasure when she has fully satisfied her master. Brought back when her training is complete. With instructions on how she is to be treated as a slave.