Jolyon makes a decision that will break apart the close-knit Forsyte family and change his life forever. Winifred married Dartie against her brother and father's wishes, but they are determined to protect the family all the same. Soames is made happy when Irene accepts his proposal of marriage, but she had conditions because she knows she does not love him. June is all grown up and in love with a promising young architect, Phil Bosinney who she is determined to marry.
