Avatar: The Last Airbender: Season 3, Episode 10

3 - 10: The Day of Black Sun, Part 1: The Invasion

The day of the eclipse has arrived, and the invasion force gathers together to make last preparations. As the eclipse draws near, they launch their assault on the Fire Nation Capital and begin their long struggle with the Fire Nation Army. Will they be able to survive the battle with the Fire Nation? Meanwhile, Aang enters the Royal Palace and searches for Fire Lord Ozai.