A young man dreams of being a singer and become popular with crowds. Over time manages to have everything you want, but on the way he meets a person based envious intrigues that it manages to lose his girlfriend and even his own representative. To do this, he must work hard in order to get back their goals and desires.
Juan Carlos Thorry is a police inspector who must solve the mystery of the death of the warden of a boarding school for young women, for which he goes undercover as a music teacher. The main suspect is the mischievous schoolgirl María Duval. A series of entanglements leads the protagonists to becoming romantically involved and to finding the culprit.
The plot reflects the figure of Pascual Contursi, tango poet. In love with a singer, he leaves his wife and son to go with her. Some time later, the singer leaves him and he composes the tango that gives the film its title.
With the expansion of television in Argentina people changed their customs and schedules. This is the story of a family father who refuses to change his own, but who suffers after having acquired a television set.