Cozy Glow, Tirek, and Chrysalis have escaped from their stone confinement, and have fled to the outer most remote regions of Equestria. They must now work together if they want to uncover the long lost Rainbow of Darkness, and use its power to conquer Equestria once and for all. Their journey, however, takes many unexpected turns, as they make new friends and foes, and uncover secrets about each other. They’ll face their toughest challenges yet, as they struggle to stay together.