An Ignominious Investigation

When Shari gets hung up on a special request story about bondage and discipline she decides to reach out to the customer and see if she can gain any insight into the attraction of the BDSM lifestyle. The customer instead invites her to spend the weekend with her and her lover to get a first-hand look at the lifestyle. Following an hour's drive to her customer's home, she meets Courtney the submissive member of the twosome.
She tells Shari that she and her lover, or mistress Liz has planned a grand dinner in Shari's honor and afterward they can get down to discussing the subject that interests Shari so much. Much to Shari's shock, the two women aren't planning to tell Shari about their lifestyle they are going to immerse her in the middle of it. So, for the rest of the evening, Shari is bound and made to watch Courtney and Liz in action, demonstrating the finer points of their relationship as a D/s couple.
The point of which was to bring the unsuspecting Shari to the highest state of arousal she had ever experienced.