*Sorry it's been a while, but here's the next chapter! Please R&R! :)

*Everyone knows what happens next if they've seen Avatar, so I'm gonna summarize it all really quick since 1. it's boring to just be rewriting the show… 2. what's the point in writing it if everyone knows what happens? So, I will summarize it in a quick paragraph and then get back to writing the crossover.

They all followed the knowledge seeker to a room they found to be a celestial calendar. This is where they put in the date that Sokka found on the scroll and discovered that the darkest day in Fire Nation History was indeed the day of a Solar Eclipse, or the day of black sun, and that the Fire Nation loses their ability to firebend when there is an eclipse.

Chapter Five

Sokka was jumping for joy at this information he had obtained, and looked at the knowledge seeker. "Here, you've earned it," he said as he tossed a cookie over to it as a reward for all of its help.

The knowledge seeker happily took his treat and left with a smile on its face.

"Humans are so predictable," said Wong Shi Tong as it came up behind Sokka out of nowhere. "All they want is to destroy each other. You've given me such regret. I never should have allowed you to roam my collections."

"We had no choice," said Sokka, getting defensive with the Owl. "These people have terrorized the world for long enough, taking people's lives, destroying families, taking away the people we care about." Of course, he could only remember how he had lost his mother to a fire nation raid and then his father left them to go to war not long after. He could still remember the day he watched his father get on the ship to leave their small village in the Southern Water Tribe, and it was a day that would always rip at his heart. He and Katara had just as much of a reason as any to want the Fire Nation out of the picture.

"Please, we just want to protect the people we love," said Aang, pleading with the now angry spirit as he could only remember how the Fire Nation wiped out his entire nation of people. He never realized how much pain and anger a person could hold until he discovered the corpse of Monk Gyatso at the Southern Air Temple.

"And now, I am going to protect what I love," The Spirit said, stretching himself out to make himself seem larger and more dangerous. His neck was stretched out long enough that it looked like a swan neck with its feathers ruffled. This Owl was going for the kill.

The Spirit attacked at the Avatar, making them all run out the door and away. The Owl followed them and they all scattered, going in different directions. He picked one and went with it, but everyone had found a hiding spot. They were out of sight, and it suddenly became a game of hide and go seek.

"You can't hide from an Old Spirit forever!" he said, standing up tall on his legs and flapping his wings. "I will find you, even if it takes years!"

"What is he doing?!" asked Katara, who was not that far from Aang.

"He's sinking the Library!" yelled Aang with the horrible realization that they could very well get stuck down there. "Katara, find Ed. The Professor should be somewhere with Sokka. We have to get out of here before we're completely covered in sand!"

Katara nodded and went towards where she remembered leaving Ed. He was still where she left him.

"Ed!" she yelled, trying to get his attention.

Ed looked over in her direction. "Katara, what's going on?!"

"It's the Great Spirit," she replied. "He's sinking the Library!"

Ed's face became struck with horror. "We have to get out of here before we're all eating sand for lunch," he said. "Where are the others?"

"Aang is looking for Sokka and the Professor. He's working on getting them out," she replied.

"We need to start heading for the exit. We'll meet them there," Ed said. "Come on, let's go!"

Meanwhile, Aang found Sokka and the Professor, but leaving was up for debate.

"Sokka, we have to get out of here before there is no way out!" said Aang, pleading with Sokka.

"Aang, we have to go back to that room. We know that the Solar Eclipse is the day that they are most vulnerable, but we need to know when the next one is gonna be," said Aang.

"We can't check every date for an eclipse. That's just crazy! We don't have enough time!"

"No, we don't have to. We only need to check the dates between now and the day the comet comes, because after that...well...let's try not to think about that," Sokka said, trying to stay on the bright side.

Aang took a moment to think about it and realized that Sokka was right. They needed to know when the next one was, and it wouldn't do them a lot of good if it was going to be after Sozin's comet.

"Alright," said Aang. "But we have to be quick. Professor, you start heading towards the exit and meet up with Ed and Katara. Sokka and I will handle this."

"...I can't," said the Professor.

"What? What do you mean you can't?" said Sokka. "Just get up and start running!"

"No...I mean...I can't leave this place. I've spent years looking for this, this magnificent Library…" he said, seeming completely at peace with himself with all of the chaos around him. "I could spend an eternity here."

"That's crazy talk! Your life is more important than these books!" yelled Sokka.

"Sokka, if he wants to stay, we can't make him. We have to make sure we all get out of here alive," said Aang before turning to the Professor with a bow of respect. "Thank you for everything, Professor."

The Professor smiled. "It has been an honor and a privilege to serve the Avatar."

"Alright, lets go, Aang," said Sokka as he started to run in the direction of the Celestial Calendar.

While they were heading away from the exit, Katara and Ed were trying to run towards it. It's kinda hard to escape, though, when you have a huge Owl Spirit trying to catch them, and Wong Shi Tong was hot on their trail.

They were hiding behind a bookshelf not far from the entrance where they came in. Ed was on the edge trying to peek around while Katara was hiding right next to him.

Come on, Ed, think… Ed thought to himself. We can make it out of this alive. The owl isn't far behind us, and if we go running out he's sure to see us heading for the tower. Even if we were to make it to the tower, we climbed down a rope to get in here. It's fine for getting in and out normally, but it would be too slow for trying to escape. Aang, Sokka, and the Professor aren't even here yet. Should I wait before attempting an escape plan? No, there's not a lot of time, and I need to at least get Katara out of here while I still can. That way, if we run out of time for the rest of us, at least one of us made it out.

"Katara," Ed whispered, hoping that the Owl wouldn't hear them. "I'm going to make a distraction, and I want you to start climbing the rope to get out of here."

"What? And leave you behind? No!" Katara replied. "Aang and my brother are still out there. I'm not leaving without everyone."

"Don't you see, Katara?" said Ed, raising his voice a little as he turned to look at her. "We are being hunted while the Library is sinking into the sand. We don't have long to get out of here, and all of us might not make it out before the Library is too far into the sand. We're not guaranteed to make it out of here alive, and I have the chance to make sure you do. You have to take it. I will do my best to get your brother and Aang out of here. I promise you, I won't leave without them."

Katara took a moment to consider everything Ed was saying. "Ed, I can't lose them too. Look me square in the eye and promise me that Sokka and Aang will make it out of here. Promise me, and I'll go."

Ed looked her dead in the eye and promised her. "I will get them out. You have my word on that."

Katara felt a little more at ease hearing him say that with the sincerity in his eyes, but she was still terrified of losing them. She took Ed's word for it, though, and decided to trust him. "Just remember this, Ed. I need my brother, but the World needs Aang."

Ed nodded and took another peek out at the crossing under the tower where they had come in. He then transmuted his arm into a blade before Katara's very eyes. There were so many things she wanted to ask him about that, but she knew it would have to wait.

"I'm going to draw out Wong Shi Tong. When I do, when he's not looking, head straight for the rope and start climbing up. Be as quiet as you can be so he won't hear you. On that rope not only are you vulnerable, but you're one of his prey who is close to escaping. He wants us all, but since I'm on the ground no where close to getting out you will be the target. If he hears you he will leave me and go straight for you. Understand?"

"Got it, but are you going to be okay?" she asked. "Do you plan on taking him head on?"

"Like I said before, I've got a few tricks up my sleeve," Ed replied, and before she could ask him anything else, he was running across the bridge. "Hey, Wong Shi Tong, come on out and get me while you still can!"

Wong Shi Tong came out and went straight for Ed, and that was Katara's cue to run towards the rope. Ed was running until he knew he would have to fight the Owl, trying to stay where he could see her while staying away at the same time.

If I could just make sure she makes it out alright, then I can turn and fight, Ed thought to himself.

His entire plan was shot to pieces, though, the moment Aang and Sokka came running out.

"Katara!" yelled Sokka, running towards his sister and the rope.

Wong Shi Tong heard Sokka yelling and went straight for them.

"Ahh, shit!" yelled Ed as he ran towards the Owl with his blade of an arm and cut him off.

It didn't do much good, though, because Wong Shi Tong just jumped up and caught the air with his wings as he left Ed behind. He was heading straight for the rope, and Ed didn't have a lot of options as Sokka started to climb up the rope with Katara. Aang was on his staff and met Wong Shi Tong in the air, but before Wong Shi Tong could attack him mid air, Ed went for him. With a clasp of his hands, he transmuted everything around him to go straight towards Wong Shi Tong and nail him to the ground. It didn't hold him, but it delayed him just enough to give them a head start.

"Aang, get them out of here. I will hold him off and meet you up there," Ed yelled, heading straight towards the Owl.

"Ed, you can't fight him on your own!" said Aang, genuinely scared.

Ed grinned, looking up at Aang as he was sprinting. "Now that you guys are safe, I can. There's no holding back now."

Ed clapped his hands together and put them down on the ground to make everything rumble as the rocks moved towards Wong Shi Tong, knocking him over the bridge with his wings bound by the very rock that knocked him over.

By the time Ed looked up, Katara and Sokka were almost out and Aang was helping them up, but they weren't close enough. He saw that the window they had used to get in was close to the ground as sand was starting to come out of it.

Dammit, they won't make it in time.

Ed looked around at everything he had, and with what was left he transmuted into a giant hand that he jumped on, He moved up with his Alchemy to grab the others before having it shove them all out the window just in time to see it sink far beneath the sand.