A child does not stand the idea of having a new brother and dreams about drinking milk from the breasts of his mother again. The child asks the moon to bring him a tit only for him.

Barcelona, Spain, in the late sixties. Eugenio, a young jeweler who has fallen in love with Conchita, a singer, to the point of learning to play the guitar to accompany her in her performances, will first have to learn to overcome his stage fright.