The Agency is hired by a rich millionnaire who plans to develop the Old West town of Madril into a shopping mall. John is the one insisting on them taking on the job - as a sheriff he worked in Madril and one of remaining residents was a child when John rode into town. The millionnaire's wife is keeping John occupied as the rest of the Agency discovers that the wife is up to no good, working behind her husband's back. They manage to convince John to join back up with them and together they take the wife and her men down.
