A delinquent, the son of a police commissioner, leaves prison to seduce someone who should be like a sister to him: a girl raised and loved by his parents. To force her to give in to his obsession, he kidnaps her little daughter.
A sailor and a tango singer fall in love. To protect her, the man takes her to live with his family. But before embarking, he is robbed, and the circumstances accuse the girl of being an accomplice of the criminals.