In a galaxy millions of light-years away from Earth, humans, droids and other lifeforms co-exist. After the Great War, which lasted for over 4,500 years, 3 star systems agreed on a treaty, forming the Crescentian Republic and ending the war. The three leaders of the respective star systems decided that the centre of political power would be located on the planet of Dieusia. The population centre of Dieusia, Worf City, became the Federal District and housed the Senate Building and the different government districts.
One thousand five hundred years later, the Crescentian Republic controlled several of the galaxy's trade routes and the respective 3 star systems prospered. Peace was established within the Republic and the newly-elected Supreme Chancellor Claudine Ghen, a human, introduced the Expansion Plan, which aimed to assimilate other star systems into the Crescentian Republic. This resulted in a massive uproar in the different star systems that were outside of the Republic's control. Leaders of those systems refused to give up their power, leaving Chancellor Ghen with no other choice but to use force.
The first system that the Republic targeted was the Herranium System, governed by Duke Henry Revern IV. Hundreds of battlecruisers, carrying countless small fighters and troop transporters, made their way to Herranium. The first planet, Veres, was subdued quickly. From there, the Republic forces established a base, and within three years, the entire Herranium System was colonised by the Republic and Duke Henry IV was brought to Dieusia and was executed in front of a huge crowd.
Now, it seems that the peace within the Republic may be compromised and a potential war may break out in the near future. The colonisation of Herranium only made the Chancellor bolder. Even some of the senators in the Crescentian Senate have secret plans. The darkness within will soon reveal itself, and no one knows when.
The last time a space force arrived on Earth, the Chitauri were commanded by Loki. Though he didn't remember much of it, the way he had heard the Devil of Hell's Kitchen describe it, it was a terror to witness. Now he was inside an alien craft that was wedge shaped, just waiting for something to attack him.
"Karen?" He asked, "Did Mr. Stark get any life readings?"
"Only one," Karen responded, "inside what F.R.I.D.A.Y. identified as the bridge."
He came to a closed elevator shaft. He forced open the door and shot a web line to the top. He ascended until he came to the last door. He forced it open and saw a bizarre scene. Bodies on the floor covered in a plastic armor; some with burns and others looked like they were strangled by something. In the actual bridge area the windows were all smashed and there was one... human? Was someone here before him? No. This person had a burn in his right shoulder. It looked like what the plastic wearers were shot with. He took his pulse... weak. He looked around searching for whoever had shot him. He turned back to the man.
"Who are you?"
Warning: though this includes MCU characters, this does not follow the same continuity. The Sokovia Accords never happened, all of the Avengers are on Earth, and all of the villains of the past are locked up in the Raft. This is also pre-Infinity War. Also Star Wars doesn't exist as a fictional franchise.