Girl World 3 (1989)

Kara (Sharon Mitchell), the new mistress of Girlworld, trains new recruits in the art of pleasing each other, first in the Girlworld training area, then in a sumptuous bubble bath in the Girlworld circular tub, as Debbie (Tracey Adams), a veteran of Girlworld, does everything that she can imagine to two other Girlworld members beside the indoor swimming pool. Finally, all converge in a wild orgy in the training area...Kara is still the Queen.