Avatar: The Last Airbender Book 3: Fire

Third and final season focuses on Aang's quest to defeat the tyrannical Fire Lord. In the season's beginning, Aang and his friends Sokka, Katara, and Toph are traveling through the Fire Nation, conjuring a plan for invading the Fire Nation and looking for a teacher to teach Aang Firebending. Time is against our heroes as Sozin's Comet fast approaches...