Tris prior is the daughter of the beta Andrew Prior of the Grey Ash pack and best friend to Tobias son of alpha Marcus Eaton of Grey Ash pack. But when her best friend Tobias chooses to join the Black Shadow pack on choosing day tris decides to try and find him by transferring to Black Shadow pack and along the way accidentally causes war between the Blue Moon pack and Grey Ash pack. Can she stop this war or will she lose everyone she loves.