"Hidden air temple?" Aang repeated.

"That's right." The girl said. "Come with me and I'll show you where I live."

"This doesn't make any sense." Sokka said. "I thought Aang was the last airbender."

"You must promise to keep this place a secret. No one must know where we live or we may share the fate of those before us." The girl told them.

"We won't tell anyone." Katara said.

"Last time I was here, I don't remember seeing you." Maria said. "I thought this place was abandoned."

"It was. You didn't find the passageway leading here because you protected us by covering the remains of the island."

"So, where are you taking us?" Suki asked.

"This is where I live. You are welcome to come in." The girl led them in. There was a woman and a boy about the girl's age inside.

"Ann, who are these people?" The woman asked.

"They are visitors from the outside, but they're not evil." She told her.

"Give Ann a break, Ariel." The boy said. "Even I know they're not."

"Toph, do you think this is a trap?" Suki whispered.

"I can sense that they're telling the truth." Toph told her. "But, I think this Ariel person is a little stubborn."

"Forgive me for misjudging you." The woman told them. "I'm Ariel, Ann's mom."

"And who's this?" Aang pointed to the boy.

"That's my friend, Eric." Ann said. "We've known each other for a long time."

"How is it possible that there are still airbenders alive?" Zuko asked.

"Yeah, I thought they were all extinct." Katara said.

"Who told you that?" Ariel asked.

"According to the records, all the airbenders were attacked by the Fire Nation after the Avatar disappeared." Aang pointed out.

"Well, they're wrong." Ariel said. "Long ago, the remaining few airbenders fled to an island in the middle of the four nations. Our ancestors had the help of the earthbenders to make hidden tunnels so that we could live underground."

"So, how did you keep it hidden?" Katara asked.

"We didn't. It was this water girl here who created a mist over the visible part so that we could live without being detected."

"At that time, I too was running from the Fire Nation. It never occurred to me others were here." Maria said.

"Now that Ozai has been defeated, we no longer have to live in fear." Ariel told them.

"Actually, you may have to." Zuko told her. "Ozai-my dad-broke out of prison and is hunting us down. Even though I'm in charge of the Fire Nation, I still feel powerless to stop him."

"How are we supposed to beat the strongest firebender?" Mai asked.

"Oh, come on, you guys!" Aang said. "We can do this. We defeated Combustion Man, didn't we? We can totally handle Ozai again."

"Aang's right." Katara said. "If we work as a team, we can beat him."

"There is a way to defeat him, but it's very complicated." Ann said.

"According to the ancient legends, the Avatar was able to use all four elements at the same time." Ariel explained. "But there's a hidden power that only few have mastered. All four elements can merge to make an energy wave big enough to defeat any enemy."

"What happens to the target?" Sokka asked.

"They disappear." Ariel said. "Some say they go to the Spirit World, others state they just vanish into thin air."

"That's a little scary."

"I don't think it's a good idea. What if one of us gets hurt?" Zuko pointed out.

"Oh, please. You're just saying that to protect Mai." Maria pointed out.

"This is not the best time to start arguing." Ann told them.

"Guys, I think we have company." Toph said.

"We have to get out of here, now!" Eric said.

"But, why?"

"We have to leave or we'll never be able to stop Ozai."

"Let's hope he doesn't find us first." Katara said.

"Eric and I are coming, too." Ann said. "Mom, I promise we'll be back unharmed. You can count on it."

"Good luck, Ann." Ariel watched as the group left her house. "For all our sake, please be careful."