In a small town in Canada, Clara Callan reluctantly takes leave of her sister, Nora, who is bound for New York. It's a time when the growing threat of fascism in Europe is a constant worry, and people escape from reality through radio and the movies. Meanwhile, the two sisters -- vastly different in personality, yet inextricably linked by a shared past -- try to find their places within the complex web of social expectations for young women in the 1930s.

While Nora embarks on a glamorous career as a radio-soap opera star, Clara, a strong and independent-minded woman, struggles to...