While investigating a stolen necklace case, modern-day police officer Sophie accidentally crosses into the world of werewolves. Upon her arrival, she is mistaken for an assassin and detained by Alpha Alston. But to his shock, this human—Sophie—turns out to be his mate! With his wedding to the pack's most powerful Beta, Selena, just moments away, Alston pulls the stunned Sophie to the ceremony and publicly calls off the wedding—declaring that Sophie will become his Luna.