Jax’s little brother Mason is all grown up and finds himself longing for a life of adventure. He finds it in a way he never planned late one night while walking home to the lodge beneath a full moon, when he is attacked, bitten and left for dead by a huge black werewolf. As he’s dying and all hope is fading, he is discovered on the trail and believes he’s being saved. Instead, he’s bitten a second time, and this time by a vampire.
Mason finds himself in the middle of an ancient war between the vampires and the Dire werewolves, and during a raid, he’s captured by the wolf who first bit him, a strong alpha named Finn. Finn is powerfully attracted to him, but Mason is changing, becoming something not quite wolf and not quite vampire—a new creature with powers of his own.