90-60-90 tells of Mel's life, an orphaned teenager of a father and, by accident, also of a mother. Along with her friend Africa, they will have the opportunity to be models for the agency I-Deal, directed by Chantal and her husband Abe. Going into the entresijos of the fashion world, they will meet Bruno, who works as a photographer at the agency, divorced Mary Carmen and with a daughter, Luz. Between Mel and Bruno will emerge a sentimental relationship out of the ordinary, as this one doubles the age of the young girl.