Spoiler Warning!

In the year of 0079 and ponies have moved to space to live in colonies. But one colony was different. It was called Side 3 and they are wishing for independence. The Federation said no. So Side 3 called them selves the Principality of Zeon. They caused ruckus across space and the Federation didn't care. Until they started destroying the colonies and trying to drop them on the Federation's Earth base, Jaburo. That's when the One Year war started. The war has reached a colony that's called Side 7.
That's where a certain pony lives by the name of Twilight Sparkle and she believes she can stop the war.