The search was mainly focused on the secret that surrounded Tukuk and the lost mother of Azula (Avatar's granddaughter) Ursu. He will also reveal the details of the conclusion of the former princess of azula in the psychiatric institution of the nation of fire and the consequences that prisoner had on it. The main characters will be the Fire Nation family, especially Tuko and Azula. Avang, Tof, Sokka and Qatar will also appear, but in a more limited role than in previous novels, as repeated characters. Jin Yang noted that the series will be more focused on the supernatural side of the world avatar.