Avatar: The Last Airbender — Episode 21: Sozin's Comet: Avatar Aang (4)

You are watching the episode Sozin's Comet: Avatar Aang (4) Aang is on the offensive after getting hit in the back of his scar and triggering the Avatar State. Meanwhile, after Zuko seems to have the upper hand against Azula, Katara is forced to join the fight when Azula resorts to desperate measures.