A Chickasaw man survives great hardships and tragedy to establish a vast ranching empire along the famous cattle highway of the American West.

When a not-so-popular lawyer is killed on the county line, Maksville County Sheriff Alden Rockwell must reluctantly work with the newly elected Sheriff Jo Porter of the neighboring York county. Her "big city" methods clash with his "old school" ways, but when the murderer continues to strike, they must learn to set aside their differences and work together in order to stop the killer.

Alden Rockwell's retirement plans are interrupted when a crime syndicate threatens the family of neighboring York County sheriff Joanne "Jo" Porter, starting a chain reaction that turns into a battle for the future of the two counties.