Coming from a cruel village, Violen joins the Shadow-Blades, immortal assassins that existed for centuries. Being new and part of an everlasting family he hopes to become a good assassin, just like his brothers. Yet a tragic fate awaits the older members as Dolour looms over them, a condition that would turn them into bloodthirsty beasts should they give in to it. Only the perfect mate could save them. Violen being the youngest isn't concerned for himself as Dolour only comes after fifty years. So, when a mate comes into his world Violen's peaceful life falls apart, for she is a woman who doesn't like him and he isn't too thrilled either. Besides this disaster, a dark power is after the brotherhood and it had chosen Violen as the perfect target.