Two gorgeous sisters adore sex, and both have found their own way to get pleasure. So, the blonde takes on her own butler, and the brunette is more difficult, she has a love affair with a simple guy, who incidentally is also used by all the servants in the house (of course, the female part). And then one day one of the sisters - the one who is actually blonde - once saw the tape of her sister's amorous pastime with her own boyfriend, she wonders: who is the best lover in the house? To solve this question, she suggests that she swap boyfriends for a while.