A group of friends stumble upon a mirror that serves as a portal to a "multiverse", but soon discover that importing knowledge from the other side in order to better their lives brings increasingly dangerous consequences.

A new dark force threatens Ponyville, and the Mane 6 – Twilight Sparkle, Applejack, Rainbow Dash, Pinkie Pie, Fluttershy and Rarity – embark on an unforgettable journey beyond Equestria where they meet new friends and exciting challenges on a quest to use the magic of friendship and save their home.

When an explosive battle with Dr. Eggman shatters the universe, Sonic races through parallel dimensions to reconnect with his friends and save the world.