Surrender of Omashu

The Capture of Omashu was an event in which Fire Nation armies invaded the city of Omashu, the Earth Kingdom's second greatest stronghold. It ended in a decisive victory for the Fire Nation, as King Bumi surrendered the minute Omashu was attacked. The capture was a huge blow to the Earth Kingdom, leaving Ba Sing Se as the last great stronghold standing. Despite the victory, however, a group of Omashu citzens formed a resistance group, led by Captain Yung.

The capture resulted in Mai's father being appointed governor of the newly conquered city. A few weeks later, Princess Azula would come seeking her old friends, Mai and Ty lee, to help her capture her brother and uncle. Avatar Aang and his friends would also return to begin Aang's training with Bumi.

The Avatar and his friends successfully freed the citzens of Omashu after their arrival. They were not successful, however, in gaining Aang an Earthbending teacher, and were forced to flee the city without Bumi.