Billy Blue Cannon faces possible hanging when he is court-martialed on the charge of killing an army general's son.

Billy Blue saves an Indian girl from advances by a drunken army lieutenant, who is killed in the fight. When the girl flees to the Apache stronghold, Buck and Manolito risk their lives to persuade Cochise to release Blue's only eyewitness. Her testimony is discarded when the court learns her release was obtained by a bribe. It becomes obvious to John Cannon that the court-appointed defense is incapable of saving Billy Blue, and John personally takes over his son's defense.

John Cannon quarrels with a neighbor and Indians, and interrupts Thanksgiving plans.

Victoria persuades John to buy the last turkey from argumentative neighbor Fergus McLeish. The deal fails when McLeish, a squatter, insists on a free deed to some Cannon land. Chief Koso steals McLeish's bird, and ranch hand Pedro swaps the Indian a rifle for the turkey. The Thanksgiving dinner is threatened when Chief Koso wants the turkey back and McLeish thinks John is the thief.

A flamboyant Irishman cons Buck into buying a camel, promising it will revolutionize the cattle industry.

Cavalry trooper Flanagan misinterprets an order to ""shoe"" his camel Tillie as ""shoot"" and deserts his unit to save the camel's life. Flanagan wears out his welcome at the Cannon Ranch when he cheats at poker, steals Manolito's girl, Pearlita, and admits Tillie can't herd cattle. When Flanagan attempts to escape the Cannon Ranch with Tillie and rejoin the cavalry, he discovers the unit is surrounded by Indians.