Penthouse: The Girls of Penthouse: Vol.4 (2001)

The girls from Penthouse are back and they're about to set out on an expedition to map the many possible routes that can be taken through the world of pleasure. Devon, Devinn, Tera, and Aria are the brave sensual adventurers who have been chosen for this particular mission, and they will not rest until they have scaled the Everest of sexual abandon.