After studying in the capital, the young Cate, 18, returns to her small town in Minas Gerais, to teach in elementary school. Enthusiastic, free and communicative, she conquers the students in the act, but its leading behavior does not appeal to conservative teachers of the 40s. Every day she brings new ideas. While they discover the pleasure of learning, the school friends also have the first lessons about love, friendship and freedom. And the schoolmistress not only winning students: the most beautiful boys in town fall in love with her. Created by Tia Cida and niece of Bishop Aristides, Cate grew up with his uncle's godson, Beto, who became a priest and return to the city after studying outside.

Na década de 1940, uma professora volta da capital para dar aulas em sua cidade, chocando as colegas e inspirando os alunos com seu estilo nada convencional.

Aos 18 anos, Cate (Paola de Oliveira) é chamada para trabalhar numa escola de uma pequena cidade do interior. Formada em escola da cidade grande, os métodos modernos usados pela professorinha agrada aos alunos, mas incomoda pais e, principalmente, as professoras tradicionalistas com o magistério.