knock on the door and when the door-opener see a man and a naked girl in a cage.

The man said,'This is my new slave gwai, i would like her to experience more in bondage, different kind of bondage, cuffs, chains, ropes, wooden pony etc. I heard that you have got a great place here, and I would like to drop her here until she learns all about bondage, thank you.'
The man then leaves without another words, but a girl in the cage.