The title matches the action as guys end up doing their sister's sexy friend(s).
One of the better seductresses is Brooke Belle, whose tight dress is sufficient to lead her guy into strong doggie and cock-riding. Jaclyn Case and Roxy Deville double-team their dude; Mindy Main easily seduces two young men and gets it from both ends and receives a dual facial finish. The rest wind up as straight couples scenes. Good stuff.
Retailing: It pays to know your sister's sexy friends.