Colin Bowles, in New York on business, finds himself blackmailed into compliance with the female head of the firm he is negotiating with. In order to save the great deal he has made, he agrees to act as her `slave'. Just a bit of play-acting for a day or two, he thinks. But he very soon learns that Mistress Penelope and her assistant Miss Mandy are not playing games. They are very much for real! Soon, he is stripped naked and chained up in a bizarre dungeon. And so begins Colin's nightmare descent into a hellish world of female domination!