In a universe where earth ponies own the land, commanding respect from newcomers, punishing those that defy them, and casting out those that are different from them, unicorns and pegasi are forced to live in the long, watchful shadow of the tyrannical earth ponies. Alicorns are seen as mutants, and are judged unfairly if ever they are captured, with public execution following suit.

A revolution is rising in the city known as Earth's Haven. Silently. Slowly. Ponies are starting to see their so-called "perfect" society is nothing more than a blindfold over the collective eyes of the populace, a delusion! A group of ponies calling themselves the Outcasts have been plotting against the ruler, Stalwart Shield, for a long time. They just need the right moment to strike…

However, the Outcasts of Earth's Haven are going to need the help of the real outcasts (the ones living outside their walls) if ever they're to succeed!