Luna is the fierce, warrior-born daughter of Alpha Silas, leader of the Blood Wolves. She has spent her entire life training to lead her pack through a brutal war against the "Red Moon" threat. However, her world is shattered when her father abruptly decides that her value lies in a political alliance rather than her skill with a blade. ​To secure the survival of their people, Silas betrothes Luna to Harland, the icy and formidable Crown Prince of the Snow Pack. Luna must grapple with the betrayal of her father, the loss of her autonomy, and the arrival of a "shadow" husband who is just as dangerous and disciplined as she is. As the two move from mutual hostility toward a begrudging respect, they must decide if they are merely "trade goods" in a political game or the ultimate weapon needed to win the coming war.