Dos en el mundo is a 1966 Argentine film directed by Solly Schroder

While playing a prank, a young boy accidentally discovers the identity of a criminal lurking in the neighborhood.

An adultery-induced woman is helped by her driver who discovers the villains.

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.

A rural businessman is robbed by a corrupt partner and his cadet son and good student aspires to run the business.

A gambling priest opposes a group of scammers.

A young man discovers an infidelity and kills his wife. He was in love with this girl and had married her to get her out of a correctional institute.

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.

Alberto Nadal, Carlos Firulo and Luis Chávez are three intrepid police officers who are in charge of solving different criminal cases.