This unsuspecting girl is sealed inside a transparent vacuum bed and teased with a vibrator (well, actually a vibrating dildo attachment)!
Following this, a tube is added, strictly taped down securely to act as a gag (there are scenes both with and without the tape gag).
The girl lies there in wait, inside of her vacuumed prison, completely oblivious to when the vibrator will switch on.
But, in a twist of a fate, the girl managed to break free of the vacuum suction by the end in a very clever way you have to see to believe!!