Liluye Painted Wing, a young girl with an extraordinary gift for singing, is raised in a life of hardship on the Blackfeet reservation in Browning, Montana. Her mother, an addict, cannot provide for her, so Liluye is protected by Etu, a man ten years older than her.
Etu Carrion watches over Liluye and provides for her, even after he moves off the reservation, joins Serpentine Motorcycle Club, and works toward his dream of raising bison.
Liluye has her own plans and eventually boards the bus bound for Nashville.
But an online threat against Liluye brings Etu back into her life.
Now known as Lily, a world-famous country singer, and Buffalo, a hardened member of Serpentine Motorcycle Club, they reunite and discover their bond is as strong as ever.
But can they survive the danger and find a way to be together again?
Under the sun. Under the moon. As the stars as his witness, Buffalo will prove Liluye has always belonged to him.