Do we know what we really want? Who do we love, who do we hate, what do we dream about? How often are our ideas about happiness deceptive? In a large American city in the early 60s, a young woman lives a mysterious double life - in reality and in a dream. In reality, she is Kitty Miller, the unmarried owner of a small bookstore, living exclusively for herself, not obligated to account for her actions to anyone. In the dream, she is housewife Katherine Andersson, a happy wife and mother who adores her husband and children. But which of these lives is it real? Is Kitty dreaming of unfulfilled dreams of family happiness? Or, on the contrary, does Katherine dream of freedom?