Twins (both played by Infante) are separated while very young, one raised as a singer by their widowed mother and another as the heir to one of Mexico's richest families. Their paths cross in the future, but they are unable to recognize each other due to their very different social backgrounds.

Manuel is a mechanic in love with the beautiful Maria Teresa. When the rich Jose Antonio courts his beloved Maria, Manuel realizes that he needs money and gets into trouble to get it.

When a robbery goes wrong, the thief takes a singer as hostage, they fall in love and try to rebuild their lives, but tragedy surges in the most unexpected way.