Annabella Lagrange is the beloved teenage daughter of a wealthy couple, owners of a glass factory. During a trip to the village, she is told that she is actually the daughter of a prostitute. Her parents confirm this. In shock, she flees and severs all ties with her family. She only stays in contact with Manuel Mendoza, her former riding teacher, which is actually undesirable. It is he who saves her when her life is in danger.