Bonded by their oath to the same flag, two confederate soldiers, "Devil" Anse Hatfield and Randall McCoy, return home seeking peace after tireless months of battle. Their expectations are quickly shattered when a murder based on misunderstandings and illicit love affair trigger warfare between former comrades and their clans. This historic feud teeters on the brink of an all-out civil war as friends and neighbors join opposing sides in a rivalry that would ultimately shape American History.