Mathews, a Korean war veteran, finds that his father, a garment company owner played by Cobb, has become involved with a union-busting syndicate. The son tries to get the father to change his mind about unions, but Cobb won't listen to him. Mathews goes to union leader Loggia and hears what he has to say about unionization. When Cobb tells syndicate boss Boone what the union leader has told his son, Loggia is brutally killed. Horrified by this, Cobb tries to break from Boone and is killed himself. Mathews, with the help of French, digs up records of pay-offs to Boone. French goes to the district attorney; meanwhile Mathews, in revenge, beats up the mob boss before the police cart Boone away. Director Aldrich was replaced by Vincent Sherman five days before the end of schedule, and shooting then continued for 16 days. Aldrich said he had never seen the film, and doesn't know how much of his footage was re-shot.