In times of the French Intervention, a student of Nunó, author of the Mexican National Anthem, falls in love with the niece of the French Ambassador, which causes quite amusing complications.

Pedro Infante
as Lt. Luis Sandoval

Lina Montes
as Esther Dubois

Miguel Inclán
as President Benito Juárez

Miguel Arenas
as Conde Dubois de Saligny

Miguel Ángel Ferriz Sr.
as Gen. Ignacio Zaragoza

Carlos Riquelme
as Francisco González Bocanegra

Armando Soto La Marina 'El Chicote'
as Pastelero

Salvador Carrasco
as Jaime Nunó

Margarita Cortés
as Lupe

Francisco Jambrina
as Gen. Juan Prim