Soon after returning to his hometown with his classmate (Fernando Soto) in tow, seminary student Miguel Morales (Pedro Infante) is assigned to teach in an all-girls' school and finds himself struggling with issues of faith. Concerned that the young man's hormones will triumph, a wary father superior (Arturo Soto Rangel) begins to suspect the worst: that Miguel plans to renounce his vows and marry a beautiful student (Silvia Derbez).