Eva is a beautiful model who’s hired to star in a campaign to sell a marvelous new product: the male contraceptive pill. But it isn't easy to win the confidence of its target market, since they believe it causes impotence.
On the eve of the premiere of a theatrical superproduction in the city of São Paulo, the assembly team performs the last dress rehearsal. But, mysteriously, the four leading actresses are poisoned. Now, the police will investigate each person related to the play to find out who caused the tragedy.
Paulo, an engineer, adopts shoe-shining teenage boy Darci, and slowly realizes he has more than just paternal feelings for him. Many twists follow, regarding Darci's true identity.
