In this sex farce, two eccentric manufacturing families from far-flung regions of Spain have come to Madrid in order to try and influence a government ministry's decision about who will make a particular set of Army uniforms. The man of the house, in one of the families, has married into it purely as a business arrangement. His current extramarital arrangement is with the family company's lovely female lawyer. Meanwhile, his decidedly odd wife has been experiencing sexual ecstasies while reading self-help books, and her sister has been passing the years by longing for the return of an old lover, a political radical she lost track of years ago. It turns out that the former radical is now the government minister they all hope to influence, and the minister's assistant is intensely interested in his old flame, the sister. The competing family head is also pursuing the sister in the other family, under the mistaken impression that she is the adulterous lawyer. Meanwhile, a transformation is taking place with the do-it-yourself addicted wife.