War fires erupt across the northern frontier, and a blood feud divides the Central Plains from the north. Princess Yun Luo of the north bears the pain of her clan's annihilation, with the mark of a wolf etched into her bloodline. Shen Yan, a hostage prince from the Central Plains, is caught in a web of political intrigue, his sword pointed at all under heaven. When the mysterious Frostwolf Guard runs rampant and the forbidden power of an ancient altar becomes the object of desire, two sworn enemies are forced by fate to fight side by side. Tempered by schemes and the flames of war, they go from crossing blades to entrusting each other with their lives.
