Ranch owner MacGregor has seven sons and oldest Gregor leads his brothers to Las Mesas, a small town where they want to sell horses. They get into trouble with local people who are related with evil Santillana. After getting imprisoned and losing their horses they decide to go after Santillana's gang.

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Main Cast: Robert Woods, Fernando Sancho, Agata Flori, Leo Anchóriz, Manuel Zarzo, Nazzareno Zamperla, Paolo Magalotti, Julio Pérez Tabernero, Saturno Cerra, Alberto Dell'Acqua

Director: Franco Giraldi

Writers: David Moreno Mingote, Fernando Di Leo, Enzo Dell'Aquila, Duccio Tessari

Editors: Nino Baragli, Mario Morra

Cinematographer: Alejandro Ulloa

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