An artefact made from ancient werewolf blood to shield the Werewolves from the power of the blood moon that makes them feral and bloodlust, was stolen and the last place it was seen or felt is the farthest place to where It belonged.

In a hunt for the artefact the two most powerful Alphas in Europe came across their mate, who so happened to be the younger sister of the suspected thief.

Crossed between taking their revenge on the whole family and claiming their mate as theirs, they seek to uncover the truth about the missing halo, Older sister and why the blood moon doesn't seem so powerful whenever their mate is around their pack.