Twelve-year-old Freya enjoys karate and is the only one in her class who's trusted with a part-time job. But everything changes when she meets a boy with yellow eyes. She learns about the guardians, and how an age-old fight has prevented them from fulfilling their purpose. Freya finds new friends in the Crow tribe, but not everything in the castle is blissful. A destructive shadow lies within her and all she needs to do to release it is close her eyes. But as the guardians' war rages on, Freya realises that, although the shadow's power can be useful, it can't create peace. To do that, Freya and her friends must solve the mysterious crime that began the war. Can they bring the guardians together before they destroy each other?