Among the Silvermoon wolves, bloodline decides rank. When the Moon Guardian Seraphina dies after childbirth, the clan's ritual at the Moon Spring shows silver light in her younger sister Selena's blood, and nothing in her daughter Aurora's. The verdict is clear: Selena will take over as Moon Guardian, and Aurora is written off as an ordinary werewolf. Eighteen years on, Aurora's fiancé Liam is proud of his own pure lineage and looks down on her.
As the Blood Moon nears and a fresh wave of werewolves is about to emerge, the truth begins to crack open. The homeless man she once wrongly married proves to be a hidden Alpha, and the clan's belief in bloodline starts to fall apart.