Avatar: The Last Airbender - Season 3 - Eps 18: Sozin's Comet: The Phoenix King (1)
Aang struggles to decide whether or not he has to kill the Fire Lord and, during the night, is drawn toward an island which disappears before morning. Zuko leads the rest of the group to the Earth Kingdom to meet a tracker whom they hope can find Aang. The Fire Lord crowns himself Phoenix King and Aang awakens on the island not knowing where he is.
About Avatar: The Last Airbender

Title: Avatar: The Last Airbender
First Air Date: 2005-02-21
Last Air Date: 2008-07-19
Status: Ended
Rating: 8.74/10 (from 4264 votes)
Language: EN
Seasons: 4
Total Episodes: 61
Network: Nickelodeon
Genres: Animation, Action & Adventure, Sci-Fi & Fantasy
Production Companies: Nickelodeon Animation Studio, JM Animation, DR Movie, Moi Animation, Nickelodeon Productions
Synopsis
In a war-torn world of elemental magic, a young boy reawakens to undertake a dangerous mystic quest to fulfill his destiny as the Avatar, and bring peace to the world.
Cast

Zach Tyler Eisen
Aang (voice)

Mae Whitman
Katara (voice)

Jack De Sena
Sokka (voice)

Dante Basco
Zuko (voice)

Jessie Flower
Toph Beifong (voice)

Greg Baldwin
Iroh (voice)

Dee Bradley Baker
Appa / Momo (voice)

Grey DeLisle
Azula (voice)

Cricket Leigh
Mai (voice)

Olivia Hack
Ty Lee (voice)