When a new pony joins Cheerilee's class, the girls are all very keen to get to know this new filly.
Something seems vaguely familiar about this particular foal, has Sweetie Belle met her before?
When Sweetie decides to ask her sister about it, Rarity reveals a story about Sweetie's past.
When Sweetie Belle hears that the filly is trying to protect her and her friends from a dark and evil descendent, Sweetie wants to know whats, what. But maybe it's not Sweetie Belle who needs to be protected...
The descendant has a score to settle with the filly, and it's going to go down. The hard way.