Half-Indian Martin Pawley's family was massacred in a Comanche raid, and his kid sister Debbie kidnapped. Martin and his Uncle Ethan, a Civil War veteran, have been searching for Debbie for five years. More than anything, Ethan hates Indians, and Martin gradually realizes that Ethan's hate is also directed towards him. He questions Ethan's motives in wanting to find Debbie. Does he want to rescue her or kill her?