Even in the supernatural world, Darcy and Ceridwen Collins are considered quite extraordinary. They’re the first females born into the Collins clan in nearly 1,000 years. They’re not only twins (an extreme rarity in the werewolf world) but twins that get along. Not to mention the whole Alpha/Omega dynamic. Darcy, as the firstborn and alpha, is the heir of the Collins pack. Destined to take over as pack leader when their father steps down. However, Darcy wants nothing to do with the infamous Collins pack and has been trying to convince her father to name her sister as the proper heir for years. Alistair won’t hear of such a thing as an omega becoming pack leader would surely end in anarchy. Things start looking up when a beautiful druid doctor comes into the twins’ lives, befriending Ceridwen and enthralling Darcy instantly. Making Alistair and the rest of the pack think that Darcy has finally decided to accept her destiny. Of course, not everyone wants Darcy to take over as pack leader and a sinister plan begins to develop in an effort to bring down the Collins reign once and for all.

One year after the events of “The Calling”, the Collins twins are settling into the changes in their lives. Ceridwen and Patrick are now married and trying to figure out the best time to bring a new heir into the pack. Meanwhile, Darcy and Tamsin are planning a wedding as well as their future. With everything going so well, Ceri decides the time is right to start working on her dream project. Enlisting help from Tamsin, they begin working on a cure for vampirism. They keep their work secret, even from their mates as they know their significant others would never allow them to work on such a project. They soon find out that keeping their work a secret isn’t so easy. Especially with overly cautious alphas and growing suspicious from an old acquaintance. The doctors’ good intentions might just put the pack, as well as the entire supernatural community, in great danger.

Shortly after the ending of “The Cure”, the Collins pack is quaking with excitement as Ceridwen is expecting her first child. Meanwhile, Darcy and Tamsin are enjoying their lives as newlyweds and adjusting to their new roles at the Collins Academy. It would seem that all is right within the pack. That is until an ancient prophecy is uncovered along with a long-forgotten breed of werewolf that seems to have been living in plain sight all along. Change looms on the horizon as the new heir is preparing to make their way into the world. Meanwhile, Darcy has to accept her destiny to ensure there is a future for the Collins pack as well as all of werewolf kind.