At seventeen, Agnes leaves home and her alcoholic father.She meets Jerome ,and shortly afterward, gets pregnant by him.They visit his mother :although she does not disapprove of their union, Agnes feels ill at ease with her.She decides to have the baby and she tries her best to be a good mother.But Jerome's mother is over possessive and the young girl cannot stand her anymore .She breaks up with Jerôme ,and ,after a violent quarrel with his mother , she leaves them .Without her child,Agnes becomes a homeless girl, soon addicted to heroin, prostituting herself to survive.