Battle-scarred and emotionally ravaged by the loss of his wife and children to Spanish Flu, former US Army Major Logan Hunter heads to Blue Moon to salvage whatever peace he can near the only family he has left. Patriarch Webb Calder helps Logan secure a prime piece of ranching property. But Logan's land borders the rival Dollarhide spread, stoking the battle between the families anew and pitting Logan against an adversary who stirs him like no other....

Though hesitant to expose his daughter to the man war turned him into, Jake O'Reilly agrees to work on the ranch where his daughter is living. There he meets, Kira, his late wife's cousin, who runs a horse therapy program for troubled teens. Though Jake doesn't want any complications in his life, he finds himself drawn to the tough Kira and begins to feel his wounds finally start to heal.