This is a very sacred occult ceremony taking place.  This cloaked woman blows up a black airship balloon in magical candlelight.  She disrobes in the process.  She then proceeds with the sacred balloon bondage ceremony in which she binds herself to the balloon with tape with a vibrator pressed against her clitoris betwixt her and the balloon.  When she is ready to cum she unravels herself, blows out the candle and sits up right on the balloon until orgasm. I cannot give away the secrets of the purpose of this ritual.  I would if I could.