Book 3: Fire, Volume 4 contains six chapters (episodes) from the third book (season) of the Avatar series, inlcuding the amazing series finale, Sozin's Comet.
More About Avatar: The Last Airbender:
Avatar: The Last Airbender tells the story of a 12-year-old Airbender boy named Aang (Zach Tyler Eisen), who is a master of all four elements - air, water, earth, and fire. The world is in a state of war since the Fire Nation went on the attack years ago, and Aang may be the only hope for restoring peace to a war-torn world.