As I always did when I got home from work, I went into the kitchen to see if there were any instructions from Roxy, the dominant mistress with whom I lived and the woman I had served for over three years. I was completely her slave, sexually and otherwise.

That morning she left on a business trip and would be away for five days. Her note read, “Sorry I missed you this morning. I want you to do all of the chores I asked you to do around the house. Astrid, a friend of mine from my days in Berlin has opened an exclusive Spa and Therapy Center, and I signed you up.”

“The membership fee is $5000, and I’ve made an appointment for you to start your program tonight at 9.00pm. The place is called ‘Deep Cleanse.’ I’ve told Astrid a lot about you and she’s eager to meet you. I’m sure she can take care of you while I’m away. Kisses…Roxy.”

I looked at my watch, it was already 8:20pm, and as I wouldn’t dare disobey her, I left immediately. ‘Deep Clean’ was located down a nondescript street in Brooklyn. I arrived promptly at 8:45pm, and an attractive, young blonde girl behind the counter took my name, looked at a clipboard, said I was expected and asked me to wait until Astrid was free.

About ten minutes later, Astrid strode through a heavy steel door at the end of the corridor and sat down. She was a very attractive blonde German woman who carried herself with the confidence of the owner of the business. Astrid explained that she and Roxy had met each other on the Berlin scene in the early 2000s.

“Deep Cleanse’ prides itself on meeting clients’ expectations, which is why the fee is so high. We are also very discrete and exclusive,” she said before asking me for the fee and giving me a form to sign.

Her accent was crisp, throaty and maennlich. The form asked for several physical details, and at the bottom had some legalese that absolved the Center from liability if I got hurt misusing their equipment or for not following a trainer’s instructions. I signed it without hesitation. If my mistress wanted me to join, then that’s what I would do. I had to admit, I was also very curious. As I passed the signed and completed form to Astrid, my cock began to stir.

My lustful thoughts were interrupted by Astrid’s voice, “Roxy will be very pleased to hear you obeyed her. While this is a spa during the day, in the evening we do a bit more.”

She told me you would miss at least two of your training and play sessions while she’s away so she asked me to spend some time continuing your training. We’ve discussed the specifics. She wants you to obey me, just as you would her.”

I suddenly realized that all the customers had left by 9:00pm, and the counter girl was locking the doors and turning off the outside lights. Here I was, alone with two women who, while they certainly were very pretty, suddenly seemed very menacing and dominant as well.

“John, I want you to strip immediately, then join us in the women’s locker room. You are not to speak unless spoken to, is that clear?”

She didn’t wait for my response, she continued. “From now on I am to be addressed as Mistress Astrid.”

Just at that moment, we were joined by another woman.

“This is Mistress Krystal. She’s a new Mistress, and I’m going to use you as a demonstration aid in teaching her about the correct punishment of slaves.”

I did as I was told and entered the locker room about one minute later. Mistress Krystal immediately put a blindfold on me, took me to a corner, and told me to stand facing it until I was told otherwise.

It seemed that I stood there for hours. I heard them both take showers, and could occasionally catch phrases of the conversation.

“...until he has bright red ass cheeks... just keep pushing... and…” “…at least three times...”

I was both terrified and curious about what would happen.