Many years after the invasion upon Canterlot during the wedding of Prince Shining Armor and Princess Cadence, the changelings plan to attack once again under the rule of a new leader, King Metamorphosis. Metamorphosis disguises himself as a certain colt to gain power, but his plan backfires...

Spike has been crushing on Rarity for a long time. Few years after Twilight became princess, and Spike is older, the dragon finally has the courage to admit his feelings to Rarity.