In the Salinas Valley in and around World War I, Cal Trask feels he must compete against overwhelming odds with his brother for the love of their father. Cal is frustrated at every turn, from his reaction to the war, how to get ahead in business and in life, and how to relate to his estranged mother.

After moving to a new town, troublemaking teen Jim Stark is supposed to have a clean slate, although being the new kid in town brings its own problems. While searching for some stability, Stark forms a bond with a disturbed classmate, Plato, and falls for local girl Judy. However, Judy is the girlfriend of neighborhood tough, Buzz. When Buzz violently confronts Jim and challenges him to a drag race, the new kid's real troubles begin.