Disclaimer: Avatar the Last Airbender & The Legend of Korra are created by Michael DiMartino & Brian Konzieko and owned by Nickelodeon.

Based on "The Day of Black Sun" originally by Michael Dante DiMartino.

"Previously on Avatar, Sokka planned the invasion. Aang decided to hide the fact that he was still alive. Iroh has been working out while he in prison. Aang reconnected with Raava. Zuko realized who he was and his destiny," said Avatar Roku.

The next day, Aang woke up.

Momo scurried to his shoulder.

"Top the of the morning to you, Momo!" Aang said cheerfully.

"Sounds like you slept well," Katara said.

"Like a baby moose lion," said Aang.

"Foo Foo Cuddlypoops?" Sokka asked.

"Err, poor choice of words," said Aang as he positioned himself in an attack position. "I'm ready to face the Fire Lord."

"So what's your strategy? Going to get your glow on," said Toph as she waved her fingers in front of her eyes, "and hit him," she punched the air repeatedly, "with a little Avatar State action?"*

"Well, first we have to find him, right Sokka?" Aang asked.

"According to what Zuko said, the Fire Lord will have a secret bunker underground," said Sokka.

"Do you think you'll be able to find it?" Toph asked, semi-doubtful on Aang's earthbending skills.

"I don't know, but I've gotta try," said Aang.

"Hey, do you think that fog will delay the invasion?" Katara asked.

"No, that is the invasion," Sokka replied.

5 Water Tribe ships appeared out of the fog. Hakoda peered through a telescope as Bato stood beside him. Both were wearing Water Tribe warrior armor.

Aang and Toph earthbent some docks at the port. The ships docked. Katara and Sokka ran towards their father and Katara proceeded to embrace him.

"You made it Dad!" Katara exclaimed.

"Were you able to locate everyone I told you to find?" Sokka asked.

" I did. But I'm a little worried, Sokka," said Hakoda as he looked behind at Due and Tho who were descending from the ship. "Some of these men aren't exactly the warrior type."

"Whooo-wheee. This place ain't nothing like the swamp," said Due excited and full of energy. He pointed to a rock and asked, "What'd you reckon that is, Tho? Some sort of exploding Fire Nation exploding trap that would eat ya?"

"It's just a rock," Tho replied.

"Well, I'll be," said Due.

"Is it just me, or are those fellas a little loose in the leaf head?" Hakoda said.

"I just wish they'd wear pants," said Bato.

Hue scratched his stomach, then said, "Pants are an illusion and so is death."

Hakoda, Bato, Katara were confused and worried, but Sokka smiled widely.

Katara, Aang, Toph and some swampbenders stood at the docks.

"Hi, Katara," said Haru.

"Haru," Katara as she ran and embraced him, "it's so good to see you."

Aang walked toward Haru and said, "Toph, this is Haru. When we met him, his town was controlled by the Fire Nation. So we had to hide his earthbending."

"Katara inspired me and my father," said Haru as Tyro approached, and Katara blushed, "to take back our village."

Tyro placed a hand on their shoulders and said, "You helped us find our courage, Katara. Now we're here to help you."

Toph was surprised. "No way." She said as she moved into a defensive stance. "Is that..." A pair of huge hands carries Toph up.

Hippo hugged Toph and said, "Hippo happy to see Blind Bandit!"

"You guys here for a re-match?" Toph questioned angrily.

Boulder, who was standing behind Hippo, replied, "Negatory. The Boulder and The Hippo no longer fight," he gestured no with his hands, "for others' entertainment. Now, we fight for our Kingdom!" He raised both arms up in enthusiasm.

"Sweet," said Toph as she smiled.

Sokka watched the whole scene a short distance away. He turned his head towards his father. Suddenly, a boat exploded behind Sokka and Hakoda, which shocked them. They ran toward it. The Mechanist appeared from the lower deck, his face covered in ash, and he coughed. Teo wheeled his wheelchair down the gangplank. His father, The Duke and Pipsqueak trailed behind him.

"Was that a new invention?" Sokka asked.

"Yes. But unfortunately, the incendiary capabilities of peanut sauce proved to be too successful," said The Mechanist.

"You're making peanut sauce bombs?" Sokka asked.

The Duke piggybacked on Pipsqueak's back. Their faces were covered with ash.

"They're destructive," said Pipsqueak.

"Were you able to complete work on the plans I sent you?" Sokka asked.

"Yes, I was and I think the Fire Nation would be quite surprised," replied The Mechanist.

"Aang," said Teo as he took a pole-like object from his wheelchair, "my dad and I made this for you."

Aang took it and caused it to shoot of blue wings, which popped out from the sides. Aang admired it and said, "A new glider! This is amazing."

"And as a special feature, I added a snack compartment," said The Mechanist as he placed his head under the handle and pulled it. Peanuts tumbled out of the compartment into his mouth.

"Oh well, I'm sure that will come in handy," Aang replied a little doubtful.

Sokka was very nervous. He tried to explain the Invasion Plan, but was too nervous and Hakoda stepped in and briefly explained the plan to everyone.

The invasion proceeded smoothly. They got passed the Great Gates of Azulon by using the submarines Sokka designed and The Mechanist implemented.

The submarines resurfaced.

"So, this is it huh?" Aang said.

"Are you ready for the Fire Nation to know the Avatar's alive?" Sokka asked.

"I'm ready," said Aang. Sokka grasped his arm, and wished him luck. The gang and Momo gathered around for a group hug.

Toph smiled and said, "I hope you kick some serious Fire Lord butt, Twinkle Toes."

"Everyone listen up," said Hakoda. The gang disbanded and looked up at Hakoda who is addressed the entire invasion force from the submarine's entrance. "The next time we resurface, it'll be on the beaches. So stay alert and fight smart. Now break time's over, back in the subs."

Toph and Sokka walked back while Aang and Katara remained behind. Both stared at each other and looked away.

Katara and Aang both said each other's names.

"You go first," said Aang.

"We've been through so many things together and I've seen you grow up so much. You're not that little goofy kid," said Katara as Aang blushed, "I found in the iceberg anymore. I guess what I'm trying to say is, I'm really proud of you."

"Everything is going to be different after today, isn't it?" Aang stated.

"Yes, it is." Katara replied.

"What if... what if I don't come back?" Aang asked uncertainly.

"Aang, don't say that. Of course you'll-" Katara started to say then Aang kissed her. After they parted, Katara blushed. She looked away sadly while Aang took off.

"Katara, what are you doing? It's time to submerge," said Sokka, which snapped Katara out of her confused thoughts.

"Right," Katara replied.

The subs submerged, while Katara submerged on Appa.

Zuko left the letter he wrote Mai on her bed.

"I'm sorry Mai," said Zuko as looked at the portrait of the two of them.

He returned to the palace and knelt in front of a picture.

"I know I made some bad choices. But today, I'm going to set things right," said Zuko. He grabbed his broadswords and backpack and looked at his Mother's portrait one last time. He threw on his cloak and walked away.

Hakoda, Sokka, and Katara split up; Sokka and Katara took out a battlement while Hakoda took out another. Unfortunately, Hakoda was injured and Katara healed him.

"How does that feel, Dad?" Katara asked.

"A... a little better," said Hakoda as he sat up. "I need... to get back... to the troops." He moaned.

"You're hurt. Badly. You can't fight anymore," said Katara.

"Everyone's counting on me," said Hakoda as winced from the pain, "to lead this mission, Katara. I won't let them down." He tried to get up but fell back to the ground in pain.

"Can't you heal him any faster?" Sokka asked.

"I'm doing everything I can," said Katara. Sokka looked awayvand closed his eyes.

"I'll do it," said Sokka.

"No offense Sokka but you're not exactly Mr. Healing Hands," said Katara.

"No," said Sokka then he stood up. "I'll lead the invasion force."

"Don't be crazy, Sokka," said Katara.

"Maybe I am a little crazy but the eclipse is about to start and we need to be up that volcano," said Sokka as he looked at the volcano, "by the time it does."

"You can do this. I'm proud of you, son," said Hakoda who was lying on the ground.

"I still think you're crazy but I'm proud of you too," Katara added.

Sokka led the invasion on Appa, while Aang headed to the palace.

Aang looked around the palace and knew that Zuko was right. The Fire Lord was in his secret bunker. He looked for the secret entrance to the bunker, but the palace was vast and Aang ended up lost. He took a deep breath and found his way back to the entrance.

Aang stood outside the palace and moved into an earthbending stance. He closed his eye and concentrated. He stomped his foot against the earth and discovered a bunch of tunnels. He realized he would need Sokka's and Toph's help finding the Fire Lord.

To Be Continued...

AN: * Sokka explained the Avatar State to Toph, that's how she knew about glowing.