After an unexpected and unprecedented magic-related phenomenon, the Mane Six find themselves in an entirely new world, thrust into the midst of the bloodiest battle in American history - the American Civil War. Another problem arises as the Six find themselves split right down the middle at the legendary Battle of Fort Sumter - three Confederate, three Union. Now, the Six are forced to take part in the war - a deadly, four-year battle they can only hope to be rid of soon.