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.

• Estela Films
• Jolly Film
• Robert Woods
• Fernando Sancho
• Agata Flori
• Leo Anchóriz
• Manuel Zarzo
• Nazzareno Zamperla
• Paolo Magalotti
• Julio Pérez Tabernero