Au cœur des contrées sauvages du Montana, trois frères, Alfred, Tristan et Samuel sont élevés par leur père, le colonel William Ludlow et ses amis indiens. Un jour, Samuel, le plus fragile, présente sa ravissante fiancée, Susannah à sa famille. Les trois jeunes hommes s’engagent dans la première Guerre Mondiale et Samuel décède sur le champ de bataille. A leur retour, Tristan et Alfred se battent pour conquérir le cœur de la belle veuve.
Set in the Rocky Mountains of Montana in the early 1900s, this is a tale of love, betrayal, and brotherhood. After being discharged, Colonel Ludlow decides to raise his three sons in the wilds of Montana, where they can grow up away from the government and society he has learned to despise. The three brothers mature and seem to have an unbreakable bond, until Susanna enters their lives. When Samuel, the youngest of the three, returns from college he brings with him his beautiful fiancée, Susanna. The eldest son, Alfred, soon finds himself in love with his brother's fiancée, and things get worse when he discovers a growing passion between Susanna and Tristan. Colonel Ludlow's favorite son, Tristan is willful and as wild as the mountains. As the brothers set out to fight a war in Europe, suspicion and jealousy threatens to tear apart their once indestructible bond.