"Yellowfang's Secret" follows Yellowfang, the former ShadowClan and ThunderClan medicine cat, during her early life in ShadowClan. Yellowfang trains as an apprentice but realizes that she would be a better healer, called medicine cat in the books. The book takes place at around the same time as the other Super Editions "Bluestar's Prophecy" and "Crookedstar's Promise". It is written for readers 8-12 years old.