Callie is a werewolf. She was born that way. Her twin Alexis was not born that way. Callie was raised both with her wolf family and her human family. She has befriended a werewolf. Louis Tomlinson. He helps Callie understand about being a wolf. They becomes wolves during blood moons and super moons. They don't becomes wolves during full moons. But one day, Callie's friends and twin go looking for her. They find her as a wolf. Then they saw her transform into a human. Callie and her pack kidnap the girls. The girls fall for the pack.