
Ben Cartwright is the patriarch of an all-male Nevada ranching family. Set during and after the Civil War, "Bonanza" is the story of life on the family's thousand-acre spread, known as the Ponderosa, near Virginia City. Ben has his three sons, each with a different (and deceased) mother. Serious eldest son Adam hopes to follow in his father's footsteps; middle son Hoss is a gentle giant -- physically strong, but sometimes naive; and youngest son Little Joe is the most impetuous and romantic of the offspring.
A prospector dies en route to his claim, leaving his daughter to defend her inheritance in "miner's court"; guest Ida Lupino.
Little Joe and Hoss are mistaken for gunmen while in a small Texas town; they find themselves in the middle of a dangerous feud between two families.
For saving his life, Ben offers some Ponderosa farmland to an American Indian.
Adam helps an engineer demonstrate his new technique for logging over silver mines without causing cave-ins.