What is the main conflict in Wolfsbane: A Nightshade Novel Book 2 by Andrea Cremer?

Wolfsbane is the second in the Nighshade Series by writer Andrea Cremer. Calla Tor wakes at the beginning of this novel in an unfamiliar place, only remnants of a fight between her wolf pack, Keepers, and Searchers to tell her where she might be. A Searcher comes and suggests an alliance between them and Calla's pack. At first Calla is weary of these people who have been her sworn enemy all her life, but when she realizes that this alliance could give her and her pack the one thing they have always wanted, freedom, she agrees despite lingering uncertainties. Wolfsbane is a sequel that takes known characters and puts them in a situation that will both surprise and make perfect sense to faithful readers, continuing a ride that has already gone beyond suspense and into new territory that will only continue to thrill.