The series is based on the biography of the first female lawyer in Italy. At the center of the story is a young and enterprising Italian woman named Lidia Poët. She is involved in a decidedly non-feminine profession - investigating murders. In a patriarchal world dominated by men, fearless Lidia fights alone for the right to practice law. She defends marginalized members of society and strives to secure women's suffrage in elections. The series is titled "La legge di Lidia Poët" in Italian.