In an old monastery in Mexico, the faith of all young aspiring priests is tested by the prior using psychoanalysis. During the process, young people manifest indecision, sexual problems (such as incest or homosexuality) and lack of faith.
Agapito, leader of the revolutionary movement of his state, comes to a town, kills all the federales, and gets a girl who was promised to him for his heroic deeds.
Luisa is a small-town girl who works in the bakery of the widower Don Albino. Luisa dreams of marrying and loves children. Just as Don Albino shows interest in her, Luisa announces that she will marry soon with Carlos, the driver of a rich house whom she met recently...
Priest is sympathetic and understanding toward mod-era young folks and their new world-view... but he gets in trouble with a biker gang and with a young woman who crushes unhealthily on him.
Tired of struggling, Lilia, played by Sara Montiel, moves to the city to live with her aunt, a former actress. There she strives to become a singer and meets Raul a singer, played by Agustin Lara, who helps her succeed.
Two married couples' lives are disrupted when the husbands disappear while on vacation. When the men are reported dead, the two women start a dance band... And then...