Equestrian Civil War

The date is not set in stone as a start date, but the day/time is what it needs to be for both myself and the other players already in the game.

A thousand years ago, Princess Celestia and Princess Luna fought for control of Equestria. In one world, Princess Luna did this by becoming Nightmare Moon, and was defeated and sealed by Celestia using the Elements of Harmony. In this one, Nightmare Moon never happened, and the elements were already divided between the two sisters, preventing either from using them. The very day and night are battling. Only you can decide which will win.

Details: Set a thousand years before the events of the show, the players will take part in deciding the fate of Equestria in a civil war between the princesses. Luna has the bulk of the military leadership, and a mind for military strategy and tactics, while Celestia has the majority of the populace and a fair portion of the rank and file of the soldiers with her, but no real mind for tactics or strategies.

Luna has the elements of Magic, Loyalty, and Honesty, while Celestia has Kindness, Generocity, and Laughter. Each of the elements has chosen a bearer among their sides, granting them the power of said element, but only together can the elements bring harmony and end the war, one way or another.

UPDATE: The players are agents of Princess Luna who (hopefully) will be able to activate the Elements that Celestia has in her possession (plus a "guard"). They have been sent into Celestia's territory to find and recover the Elements and bring them back to Princess Luna to end the war.