The blonde British 18-year-old student, Alexa, is bound and helpless on a metal table, her perfect tits thrust out in front of her. The leather-clad dominatrix, Miss Black, takes pleasure in teasing Alexa with the fucking machine. She starts slow, inserting one of the huge dildos into Alexa's tight, pink hole. Alexa cries out in pleasure as the machine begins to thrust, filling her completely. Miss Black laughs and increases the speed, making Alexa moan uncontrollably. The pressure builds inside Alexa's ass, and she begs for release. But Miss Black has other plans. She attaches a second dildo to the machine, stretching Alexa's asshole wide open. With a sinister smile, Miss Black increases the speed of the machine and watches as Alexa's face contorts in pain and pleasure.