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.
Robert Woods
as Gregor MacGregor
Fernando Sancho
as Miguel
Agata Flori
as Rosita Carson
Leo Anchóriz
as Santillana
Manuel Zarzo
as David MacGregor
Nazzareno Zamperla
as Peter MacGregor
Paolo Magalotti
as Kenneth MacGregor
Julio Pérez Tabernero
as Mark MacGregor
Saturno Cerra
as Johnny MacGregor
Alberto Dell'Acqua
as Dick MacGregor
Perla Cristal
as Perla
George Rigaud
as Alastair MacGregor
