Hud Bannon (Paul Newman) is a young Texas rancher who lives with his cattleman father Homer (Melvyn Douglas) and his hero-worshipping nephew Lon (Brandon DeWilde). Hud is an amoral, cold-hearted creature; his father, who holds Hud responsible for the death of his other son, tries to imbue Lon with a sense of decency and responsibility to others, but Lon is devoted to Hud and isn't inclined to listen.