Sinopsis: Claudio, un rico agente publicitario dueño de su propia agencia, está casado con Helena, una profesora de música. Afectados por la rutina de su vida, tienen constantes discusiones. Un día, tienen una pelea más fuerte de lo normal, que hace que ocurra algo inexplicable: ambos intercambian sus cuerpos. Espantados, deciden ocultarlo a los demás mientras no consigan revertir la situación. Para esto tienen que asumir por completo la vida del otro.
Basada en un argumento de Carlos Gregório y Roberto Frota.
The publicist Claudio and the housewife and choral teacher Helena have been married for many years, but they do not understand and respect the feelings and view point of each other. Claudio sees Helena as a shopper and "little teacher of a choral" and Helena sees Claudio as an insensitive and rough man. On the night before the fiftieth anniversary of Claudio, Mars, Earth and Jupiter align and Claudio and Helena argue with each other at home and they speak at the same time "If I were you". On the next morning, when they wake-up, they have switched bodies and they have to face the difficulties of the other in the agency, at school and with their friends and acquaintances.