Young - beautiful - married, fulfilled, Martha is bored. Passive in an active society, she took a first step by serving as a "guinea pig" to her brother researcher who undertook a comparative study on animal behavior and human behavior.
A reporter, fired after refusing to give names to a 1951 House Un-American Activities Committee, takes a part-time job as companion to an old lady. While working she overhears a noisy argument in the neighboring house, being conducted largely in German and involving her HUAC prosecutor. She begins to investigate, enlisting the help of the FBI Agent initially detailed to surveil her.
Because he wanted to protect his little brother, Teddy, a young man without a history, is accused of the murder of his father and sent to a closed educational center, waiting for his trial for parricide. He then plunges into a brutal universe of which he does not know the rules.
Middle-aged widow Beatrice Hunsdorfer and her daughters Ruth and Matilda are struggling to survive in a society they barely understand. Beatrice dreams of opening an elegant tea room but does not have the wherewithal to achieve her lofty goal. Epileptic Ruth is a rebellious adolescent, while shy but highly intelligent and idealistic Matilda seeks solace in her pets and school projects, including one designed to show how small amounts of radium affect marigolds.