Mornacius universe/Human Realm universe/ Realm Earth

A world was born of an amazed ability called the elements. One who possesses it is known as benders. There are four elements in the world: Water, Earth, Fire, and Air. With four elements combining together, one who mastered it will be called Avatar. After the heroes stopped the Kuvira and her army from invading the United Republic of Nations, the prevention of another war was a success. While they are trying to rebuild the world, there is a threat that comes from them and they prepare to take it by force.

...

Somewhere within Earth Democratic Nation

A secret Romanusan base was established somewhere in the mountains that is plain sight from outside the Earth Democratic Nation. They built the portal to bring the Royal Romanusan Army to enter this world. They opened the portal as the Romanusan Army poured out with larger numbers. A general named George Lavikornia led his invasion army and his task was to take over the world as soon as possible. A commander in charge of the base walked up to him as he said.

Romanusan  commander (Romanusan): My general, it's so good to see you here for coming this world would be ours soon.

Lavikornia (Romanusan): Soon, commander. The reports show that this world was inhabited by benders, non-benders, and spirits. They become a threat to our glorious Fascist Italinian Empire. Are there natives secretly willing to join us?

Romanusancommander (Romanusan): Yes sir! Some of the natives are non-benders and willing to do anything to live without fear of benders. The recruits are still training for a few days.

Lavikornia (Romanusan): Then it's time to prove their loyalty to the fascist empire. Tell them to be ready within an hour. The invasion will start in 5 minutes and I don't want to wait any longer for an opportunity to expand our territory on this planet. Also, is the weapon ready?

Romanusan commander (Romanusan): Not yet, sir. The spirit energy we gather here is extraordinary so the scientists tried their best to conduct some experiment before we can use it as a field test.

Lavikornia (Romanusan): Very well. Just be ready for invasion.

Romanusan commander (Romanusan): Understood, general!

He walked away. Lavikornia pulls out a cigarette and puts it in his mouth as he starts to smoke. He blows it out and smiles to see his army is ready to conquer this planet for the glorious Romanusan Empire.

Lavikornia (Romanusan): It's time to show the universe we are stronger than failing Fascist Italy.

...

Air Temple Island

A short-haired and brown skinned woman named Korra was meditating to concentrate for a while. After every adventure she and her friends have been through she decides to take a rest and try to relax for a while. Her friends went to do their own business. Tenzin and his family are in the house to have a good time for a long while. As she meditated, a vision came to her.

Korra Vision

Her vision saw in the future what will happen to the world. She opens her eyes to see everything is normal except something is not right. She saw the city was on fire as the black smoke rose to the air. She ran towards the city to save people there. But when she got there, many people were dead on the streets. She placed her hand to the mouth shocking and horrifying to see these people are dead. She tried to check the survivors, but she found no survivors, every single one of them. She keeps running until she hears a noise coming from the sky. She looked up to see a few biplanes were on fire and blown up from the sky then she saw different aircraft that go faster than the biplanes. She doesn't know what vision she has seen when she hears people's screams. She saw a few citizens running away in panic until they were gunned down from the back. She looks in the distance to see those strange armored vehicles and soldiers on the street shooting everyone they can see. Seeing they're responsible for the city attack, she went to attack them, but before she could attack one of the soldiers noticed her and the rest aimed at her. She ready her bending ability, but it's too late as the soldiers open fire and she got shot multiple times and fell on the ground. She's coughing in blood and her eyes widened to see only the sky and then there's a larger shadow figure covering the sun. It's larger than an airship. When she gets a good look to see a metal floating ship flying above the city which is surprising for her. Then, she saw a man wearing some kind of an officer which she can tell he's wearing a military uniform. He looked down as he pulled out a plasma revolver and put out of her misery.

Korra Vision ended

Korra opens her eyes shockingly widened as she takes a breath for a while. Afterward, she felt that the vision was telling her something was coming and she didn't want to wait to find out so she got up and ran towards Tenzin's office room. She got to the room to see Tenzin was sitting there hearing something urgent from the phone.

Korra: Tenzin! Something is happening.

Tenzin: Korra, not now. I'm calling here... Yes... I understand... I'll let Pres. Zhu Li knows.

He put down a telephone and Korra said to him.

Korra: What's that about?

Korra: I just got a call from Pres. Li Wei from Democratic Earth Nation. They said two or more states were under attack by unidentified forces. Something is going on in the nation.

Korra: But only the remnants of Great Uniter have that many to take over Earth Nation.

Tenzin: No. It's not Great Uniter.

Korra: Possibly Equality?

Tenzin: Neither that one. It seems like we have a new group causing trouble within the Earth Nation state. They tried to send their army there, but that would make the world think they rearmament the military and plot to take over again. I need you to help them to find out who they are, and stop them before there will be another war.

Korra: I'm on it! I'll get my friends to join me too.

Tenzin: Very well. Just be careful. We don't know what they are planning.

Korra: Don't worry, I'll be fine. I will make sure there won't be a war like the last time.

...

Democratic Earth Nation Territory

Korra is riding on a bison flying through the sky to reach one of the states being attacked by an unknown group. But she's not alone. She brought her friends to join a mission. Mako, Bolin, and Asami got a call from Korra to investigate what's going on in the state of Democratic Earth Nation and she needed them for help so they agreed and went to join the mission which leads to another adventure. Mako and Bolin are brothers that once had a parent until they were murdered by a firebender leading them to be orphaned then they become pro-bending fighters for the tournament until they meet Korra which their lives have changed. Now, they become policemen and part of Team Avatar. Asami is a daughter of Hiroshi Sato who is a member of The Equalist before he sacrifices himself to make a hole to infiltrate Kuvira's mech robot and get her daughter out from danger. Then, Asami and Korra show their feelings and become couples and she is a CEO of Future Industries. While flying through Democratic Earth Nation territory, they decide to have a conversation.

Bolin: So... What seems to be the problem for Earth Nation this time?

Korra: Tenzin told me there's something happening to the state in Earth Nation. Some unknown group is just attacking each state like they have an army.

Mako: I think it's the Great Uniter remnants.

Asami: But they were defeated after Korra had Kuvira on our side to defeat Commander Guan's army and free us from brainwashing.

Mako: Whatever they are, they're dangerous.

Korra: That's why I brought you guys here to see what's going on and put a stop to it.

Asami: Agree.

They reached one of Democratic Earth Nation when suddenly two Italinian Striker VTOLs flew past them causing a bison out of control of flying.

Korra: Whoa! Easy there.

Korra tried to calm down a bison and keep flying in the sky.

Bolin: What in the world is that!

Asami: It can't be... Are those aircrafts? But they're different from biplanes.

Mako is looking out, shocked to see something at the ground.

Mako: Um, guys. We're here, but there's something else.

Korra: What?

Mako: Look down.

She and the others looked down on Mako and saw something shocking. A massive army unknown to them is attacking a state seeing a lot of explosions, gunshots, and screams from the civilians.

Asami: Korra!

Korra: I know! Come on, we must save those people!

She and the others go down to save the people from unknown invaders.

...

In part of Earth state known as Ya, the people are running in fear as Romanusan stormtroopers chase after them and firing guns at them. Romanusan assault walker squad walking in street to find and kill any Earth people fleeing the state. The DEN police force use their earth bending to stop them and they did it. But they never ready to face against a massive army. An army of difensore androids marching on the street and start shooting on both civilians and police forces. Romanusan ground forces make damages in the city. The criminals forced to work together with police force to fought them off, but the army is too great they are no chance of winning and they are defeated. Romanusan sends out a missile truck as it rains missiles down to destroys enemy defense line. The Romanusan army will soon take over a state from Democratic Earth Nation.

The civilians carrying variables they can bring running through the street to flee from the state when Italinian stormtroopers block their only path to escape. The officer ordered his men to aim the guns at the civilians.

DEN female civilian: No, please!

Then suddenly, the ground began to move from above as it took out Italinian troops. They see who it was until Korra and the others come to rescue.

DEN male civilian: It's the Avatar!

Korra: Everyone, get to the subway tunnel. Asami takes these people to safety.

Asami: Understood. Just please be careful.

Korra: Don't worry, I'll be fine.

She said Korra, Bolin, and Mako run off to get the people to safety and fend off the invaders while Asami will get them to the subway tunnel to evacuate. Korra and her others find remaining civilians running away from Italinian forces.

Romanusan officer (Romanusan): Kill those inferior beings! Show them fear of Fascist Romanusan Empire!

The Romanusan stormtroopers and heavy troopers are gunning down on running away civilians. Korra and her others are horrified and shocked to see them killing those civilians.

Bolin: They- They're killing them!

Mako clenched his fist in anger to see people killed by invaders.

Korra: Whoever they are, they possess dangerous weapons we have never seen. But we can still save those people.

Korra use her water bending to attack the invaders. Bolin use earth bending to bring up rocks from the ground and shoots at them. Mako shoots fire at enemy stormtroopers, but not heavy trooper due to fireproof armor suit. The heavy troopers open fire when Bolin make earth wall to block the bullets, but it will destroy soon. Italinian brought a light tank as it take aim and fire at earth wall. Bolin was pushed away from the blast as it destroys earth wall and fall to the ground.

Mako: Bolin!

Mako creates fire missiles and shoots at an enemy light tank and it was being hit a bit. A light tank is aiming at him when Korra comes and defeats it using earth bending. More Romanusan troops came to see their forces were defeated by them so they attempted to shoot them. Bolin immediately got up and created more earth walls to block the road.

Mako: Bolin, you alright?

Bolin: Yeah... Man, that blast is a punch, but more deadly than a spirit energy cannon.

Mako: Good... Now then, where did they come from?

Korra: Not sure. But I fear that we're gonna face an army.

Bolin: Should we warn everyone about this?

Korra: We can. But right now, we have to find civilians and get them to evacuate the state to Ba Sing Se.

But then, two flying Striker VTOLs came from the sky and started shooting them on the ground. Bolin and Korra are able to create an earth shield in time.

Mako: We gotta go!

They run away to the street from enemy aircrafts. As they keep running on the street, Korra brings up rocks from the ground and starts shooting them as projectiles. One of Striker VTOL got hit on the wing and it slowly lost control while the other one was able to dodge it and continue to pursue them while shooting. Mako was his turn as he shot fire projectiles at the bottom of enemy VTOL as it got hit and forced to retreat. They stopped for a while until they saw more civilians running away from Italinian forces, this time they brought assault walkers and difensore androids chasing them.

Bolin: Hey guys! Those guys... They don't look like soldiers.

Mako: But they have those different mech suits.

Korra: C'mon!

They went towards Romanusan forces chasing the civilians as they started to attack them. The Romanusan forces notice they're coming towards them as they begun to fire. Korra use air bending known as air wheel to maneuver towards them. Mako goes up to the air and shoots fireballs at them. Bolin use lava bending to bring lava at them from the ground. Korra air punch at enemy androids as they forced pushed away. She went attack them using punches and kicks on Romanusan androids. Back to Mako and Bolin, his brother uses lava bending to melt their feet and Mako uses fire streams on Romanusan assault walkers to push them away and fall on the ground. Korra use both water and air bendings to defeat Romanusan androids as they are getting destroyed. Bolin used earth jumps to the air and ready to attack.

Bolin: Eat this!

He lands on the ground as he creates earth columns underneath them. After that, Korra faced the civilians and she said,

Korra: Go! Get to the subway tunnel.

They complied and headed to the subway tunnel. They feel a bit tired of fighting, but they never give up. They hear the sound so they turn around to see more of them coming this way and they have a larger army.

Mako: We can't defeat all of them! We need to block their path.

Bolin: Got it!

He went ahead as he created an earth wall to block the path. Korra also creates three more earth walls to slow them down.

Korra: Alright, that'll slow them down. Come on.

They headed back to the subway tunnel.

...

Outside the Ya state

Gen. Lavikornia is standing there looking at the city using binoculars as artillery tanks fire to bombard the city. He hears screams from the civilians living there and there's gunshots. After looking at the city, he decides to have a smoke. To him, it was so easy to conquer this world since the natives didn't invent firearms to protect themselves from the threat. He saw the reports before coming here that they are benders that can rely on and they invent mechanized walkers, vehicles and aircrafts. Although the vehicles and aircrafts are kinda based on the 1800s as it was written the history about Earth where their descendants used to live there before exiling themselves to the galaxy. He continued to smoke cigarettes when his commander approached him.

Italinian commander (Romanusan): General, sir!

Lavikornia (Romanusan): Hm? Report.

Italinian commander (Romanusan): The divisions deployed in each of the states of Jun Lao, Yi, Da Po Fu, Nuo, and Rong are being occupied and under our control.

Lavikornia (Romanusan): Excellent! This makes it so much easier than I expected. Once we take over Democratic Earth Nation, the rest of the world will follow under the feet of our glorious leader. Commander, have the bombers finished bombing the Ba Sing Se?

Italinian commander (Romanusan): They're already on the way, general.

Lavikornia (Romanusan): And the ballistic missile trucks?

Italinian commander (Romanusan): They are in the position awaiting your orders.

Lavikornia (Romanusan): Commence attack the city.

...

A squadron of Omega bombers flies through the sky as they start bombing the city from below. The citizens living in the city were shocked and afraid of those aircrafts and they started to bomb the city and a lot of them were killed in the explosion.

A few of Romanusan ballistic missile trucks ready their missiles and launch to the air towards Ba Sing Se. The missiles hit the city causing a lot of explosions more effective than bombing from the sky. They destroyed homes and businesses inside the walls. Then, the portal appears as an army pouring out and march towards the capital city. They sent Romanusan dannazione siege walker fires energy cannon to destroy the wall and make a hole. The army enters the capital city as they launch the attack. The DEN soldiers are in the frontlines and be ready for defend the nation from the invaders. But those army are different from the enemies. Dannazione siege walker fires machine guns on the soldiers as they don't stand the chance. Romanusan eliminators destroys mech suits which they still used for Democratic Earth Nation after Great Uniter downfall. DEN airships armed triple-barrel ballistas turrets and small turrets that shoots metal cannonballs. They sent biplanes to join the fight. But unfortunately, they didn't expect to come against new enemy. Striker VTOLs, Spazio fighters, and Omega bombers flies toward them as the dogfight has begun. To DEN, they are getting shot down by advanced aircrafts. The DEN airships are also shot down because Romanusan have powerful machine guns and missiles to take them so easily. The Italinian took over the sky and the capital city is crawling with Romanusan forces. The council of DEN have no choice but to surrender to the invaders and they make a sound of victory. Soon, the whole continent of Earth Nation will belong to Fascist Romanusan Empire and the other continents will be next.

...

Meanwhile, Korra and the others are managing to get these people to safety as they are about to head to the capital city. But then, something changed. Asami called Korra and the others to hear the radio broadcast around the world about this shocking news.

Li Wei (radio): This is Pres. Li Wei of Democratic Earth Nation. I regretfully announce that our once great nation has again fallen by these invaders. Like a hundred year war, The Fire Nation ruled over this continent until Avatar Aang came and saved the world from Lord Ozai and liberated Ba Sing Se. Now, the capital city is ruled again by the oppressor. But rest assured, the people of Earth Nation never give up. I promise that we'll rise again and our nation will be-

But his speech was cut short by Italinian to prevent courage the people to keep fighting. Korra and the others felt speechless as the invaders have been planning for invasion and they are way ahead of them. They seem to lose hope, but Korra don't believe it as she said to her friends.

Korra: Everyone, we cannot lose hope.

Mako: How? They have a powerful arsenal like we have never seen before. In fact, nobody knows where they come from?

Korra: Look, I know they are ahead of us. But giving up is not the option. We have faced many challenges that try to break us. It did work. But not entirely. We always risk anything to make sure the world is in peace, not starting another war.

Bolin: Well... Tell that to those guys.

Asami: Nonetheless, she's right. We'll always have a plan to defeat them. But right now, getting these people is our priority. We'll get them to the United Republic and establish a refugee camp.

Mako: Yeah. You're right. We're getting these people out of here. Bolin, let's go.

Bolin: I'm on it!

He said optimistic. They went out of the room to get those people out of the state and headed to the United Republic safely. Korra went out when Asami grabbed her arm and said to her girlfriend.

Asami: Korra, are you sure we can find the way to stop them?

Waiting for a response, Korra gives her a smile.

Korra: Yes. I know we can do it. We just have to believe it.

Asami: Yeah, yeah... I believe you.

They both locked their lips as they kissed each other. They kissed each other as Asami said.

Asami: I'm sure we can go through this.

Korra: I'm sure of it. We are Team Avatar, everything is possible and can be solved. We always keep hope for the sake of the future.

Asami: Right. Come on. Let's go.

The couples went out of the room to get those people to United Republic safety.

...

After the broadcast of Ba Sing Se took over and Democratic Earth Nation was being conquered by invaders, the other nations armed themselves as they were going to defend themselves against the new enemy. But soon, they will fall by Fascist Romanusan Empire.