When the world is in danger from mystical forces beyond anything anypony has ever seen, only one pony can stop them. Princess Celestia is the Sorceress Supreme.
"The elements of Harmony, magical artifacts of untold power. Guardians, of the powers of the gods! And they will be mine. And then... the worlds! HAIL HYDRA!" - Johann Schimdt AKA The Red Skull
Queen Chrysalis defeats Princess's Celestia, Cadance and Luna. To protect Equestria the Mane 6 are teleported and scattered two years into the future with the Elements of Harmony.