After losing his life in a terrible car crash, Malcolm DeWitt is reborn into the realm of eternal night known as the New Lunar Empire as Jason Todd, aka The Arkham Knight. After he rescues the beautiful Sunset Shimmer from Rainbow Dash's Lunar Guard, The Knight learns of the horrible atrocities and hardships the people have had to endure since Nightmare Moon took over Equestria, now the New Lunar Empire, six years ago during the 1,000th Summer Sun Celebration when she sealed the land's rightful ruler into the moon. Deciding to fight against the Dark Queen of The Night and put an end to her tyrannical rule, Sunset and The Arkham Knight set out to assemble a team of former Equestrian military leaders, rebels and other dissidents to help them do just that. Of course, Nightmare Moon and her dark forces won't go down without a hard, long, and grueling fight to the death.

The gears of civil war have begun to turn. Love will blossom. Those who might've been the best of friends in another life will instead become bitter enemies, and those who might've been bitter enemies in another life will become the best of friends.

And when the smoke clears, the darkness will be either be vanquished or consume all.