Millennia after the War in Heaven, at the edge of the Irenton Dominion, deep within the Great Void, an ancient evil stirs. Fortunately, Sunless-Halo-of-Penumbra happens to have experience dealing with ancient evils.

A failed space flight kickstarts a chain of events leading Twilight Sparkle and her friends to become embroiled in a war that will decide the fate of all of reality.

An enraged Celestia marches upon the Crystal Empire, where the beloved King Sombra and his allies prepare to make their final stand.

An executed man is brought to Equestria to work underneath the pony society and ensure that good is protected.

Twilight Sparkle is placed on the bridge of an Imperial Dreadnought during the Battle of Mars.