A young orphan girl, Portia, goes to live with her well-to-do aunt and uncle. As she is groomed to become a lady, she is confused by the young man who seems to be courting her. Surrounded by pretentious people who have no clue how to deal with teenagers, she soon loses her naïveté and thinks of running away.

Phyllis Calvert
Mrs. Heccomb
JoJo Cole
Portia Quayne

Daniel Chatto
Eddie
Alice Douglas
Clara

Paul Mark Elliott
Cecil

Samantha Gates
Lillian
Meryl Hampton
Phyllis

Robert Hardy
Major Brutt

Nigel Havers
Thomas Quayne

Damaris Hayman
Miss Paullie

Wendy Hiller
Matchett

Patricia Hodge
Anna Quayne

Jonathan Hyde
St. Quentin Miller

Sophie Thompson
Doris
Patrick Pearson
Dickie Heccomb