"Yellowfang's Secret" follows Yellowfang, the ThunderClan medicine cat (healer), during her early life in ShadowClan. Yellowfang trains as a warrior apprentice (a cat who hunts and fights), but realizes that she would do better as a medicine cat. The story in the book takes place at the same time as the other Super Editions "Bluestar's Prophecy" and "Crookedstar's Promise". It is written for readers 8-12 years old.