The Day of Black Sun, Part 1: The Invasion
On the day of the solar eclipse, many of the characters from the previous episodes reunite with the gang to help them fight and the invasion begins. Hakoda returns with a ragtag team of several allies whom the group has met during their adventures. Aang finally kisses Katara as sign of his strong feelings for her, worried that she may not return. They successfully infiltrate the Fire Nation capital as the invasion force breaks through many security barriers. Aang reaches the Fire-Lord’s palace… only to find out that no one is home.