The story of Luizinha, a girl born into a very poor family who is given by her father to António, the richest man in town, to raise her. But the death of his wife leads António to marry Berta for the second time, and it soon becomes clear that the large family home is too small to accommodate both Luizinha and her stepmother. At the height of the conflict, António defends his daughter and Berta files for a contentious divorce. Shortly afterwards, she is found dead and António is accused of murder. But the truth that the court seeks to uncover may not be the most obvious one.
