(This story takes place 3 years before the Battle of Yavin. The sequel and original Trilogy are combined into one during the Galactic Empire Era. Not all the characters from the sequel trilogy would appear, and some would have alternate personalities, with Kylo Ren trained under Darth Vader's teachings as an apprentice and not acting like a baby with tantum issues wielding a sword.)
The Galactic Republic turned into the Empire, the Jedi and the Order were hunted by the Sith Inquisitors, and the people had given up hope.
We all heard the stories of the first Galactic Civil War, but something changed. Instead of Galactic Empire army, there is the First Order Army and Navy. The Jedi stayed in hiding, not revealing themselves. Mandalore was bombed earlier before the war started, preventing Mandalorians to return back to their home planet. And what's worse, people gave up on hope. The Emporer has won.
However, all hope isn't lost. A lone Mandalorian named Dallas took a job and did not expect his target to be a little girl. He swore an oath to take care of his foundling, while this made him a target for the Empire, and eventually hunted by an inquisitor.
Join Dallas on his quest to find out the child's origins, meet the future rebel heroes, battle other Mandalorians, recruit new crew members for the Avenger, and explore a new galaxy to deal with.