The Meiks brothers, Fenton and Adam, have an idyllic relationship with their father. Their world is turned upside-down when their father suddenly announces that he has been visited by an angel who entrusted him with the holy mission of destroying "demons".

Triggered by a murder based on misunderstandings and an illicit love affair, this is the dramatic historic feud that 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.