Calla is an ordinary high school student, but those who know her closely know that she belongs to the caste of Warriors - wolves who know how to handle people. They are controlled by the Guardians, supported by the terrible Ghosts. Warriors are forbidden to communicate with ordinary people. Calla is not an ordinary Warrior, she is the leader of a pack of young wolves from the Nightshade clan. Her fate is predetermined from birth. The Guardians want to unite young people from two ancient clans to create a new pack. Calla is destined to marry the young leader of another clan, a beautiful and strong wolf named Ren. The girl is submissive to the will of the Guardians and awaits the conclusion of an alliance. One day, while on patrol in the forest, she saves a handsome young man from the clutches of a bear. Calla knows that she has broken the law and is afraid of the well-deserved punishment. The rescued young man turns out to be a new student. Having met him again, Calla realizes that she is unable to resist mutual attraction. There is a mysterious connection between him and her world.