In this sly Mexican sex comedy, a manipulative mama deftly manages the life of her homosexual son so that he can have his cake and eat it too. A woman of means, she does this by allowing her son, a doctor, to tryst in her home with his lover. Putting her son's happiness above all else, she then arranges a marriage of convenience to a woman. When the marriage is consummated, the young male lover gets terribly jealous and this creates problems until the irrepressible Doña Herlinda again gets involved.