Kalliste Hayward is an omega. Kenric, the Alpha of the Topaz Pack, was her mate, but she never had Kenric's love. Kenric abruptly orders her to work at the home of his enemy, Alpha Viltarin of the Sapphire Pack, and she disguises herself as a spy. But it turns out that Alpha Viltarin is also her mate. Everyone knew Kenric and Viltarin never got along and frequently fought. What should she do? How can she have two mates?

After her father died a year ago, Charis Swinton, an only child, must carry on her father's leadership of the Garnet Pack. Charis continues to stand solid and is unconcerned, even though many underestimate her and attempt to remove her in numerous ways. Charis realized. She needs a mate to keep her position, but unfortunately, her mate is a human. The wolf in her body and the other pack members did not accept her mate's presence. On the other hand, her power-crazed mate is willing to go to any length, even if it means turning into a werewolf.