After Rarity falls for a new prince, Spike is infuriated. Twilight finds him in their bedroom seething with anger, so she decides to calm him down. Later that night Spike begins to have romantic dreams about Twilight. At first they horrify him, but eventually he begins to like them. Then he finally begins to understand why he keeps having them; he's in love with Twilight.

This is the story of the Main mane 6 when the elements of harmony were wielded by Alicorns. We've all met Celestia and Luna who could not have wielded or had all 6 attributes of the 6 elements on their own, Twilight Sparkle meets one of their sisters and learns of what happened to the Alicorn race.