How many episodes are in Book Three: Fire? Book Three: Fire has 21 episodes.
Book Three: Fire is the third and final season of Avatar: The Last Airbender. It follows Aang and his friends after the fall of Ba Sing Se as they prepare to confront Fire Lord Ozai and stop the Fire Nation’s campaign of conquest. The season contains 21 episodes, including the four-part finale, “Sozin’s Comet.”
The season aired on Nickelodeon from September 21, 2007, to July 19, 2008. Its story combines Aang’s effort to master firebending with Zuko’s growing rejection of his father’s ideology. It also includes major episodes such as “The Day of Black Sun,” “The Firebending Masters,” and “The Southern Raiders.”
The number can be confusing because the first two seasons each have different episode counts: Book One has 20 episodes and Book Two also has 20. Book Three’s finale is four episodes long, but it counts as four individual episodes within the season’s total of 21.