Gregor and the rest of the MacGregor brothers want to sell horses in Las Mesas where they get into trouble with the locals and evil Santillana. After doing time behind bars and losing their horses they decide to go after Santillana's gang.

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.—cengelm