A lot has happened in ten years since Celestia and Luna have taken the title as Princesses of Equestria and The Master of Chaos was turned to stone. Equestria has grown and expanded further than anyone ever thought possible. Queen Aurora and King Noble Heart are expecting a child and the two sisters have added an extra castle deep in the Everfree Forest. While everyone is congratulating each other, something in the shadows has been growing in power; ready to be unleashed and threaten everything they have built. Can the Princesses come together and save Equestria again or will their greatest battle lead to their destruction? Join Princess Celestia and Princess Luna one last time as the defining chapter of the Princesses of Equestria trilogy takes flight! The prequel trilogy ends here.