Exactly what it says on the tin: 1984, by George Orwell. With ponies.
The year is 1984. Over 1000 years since Nightmare Moon was banished, and Celestia's totalitarianist reign still holds true. Rainbow Dash, embodiment of the element of Loyalty, is sick and tired of the corrupt Solar Empire, its Thought Police, and even Celestia herself.
But in a world where disloyalty means death, Dash needs a new cause to stand up for. A certain bashful yellow mare and a studious unicorn could help her stand up to the Party's cruelty… or lead her to her downfall.