Princess Cadence has been in seclusion for some time, and when you receive a personal summons from her you obey. Unfortunately for you, the Princess seems to have a certain request for you. A request that you would've been happy to fulfill any other time.

{sarcasm}
If you're here, then I want you to know that this was the most fun thing to write. Ever.

No, really. It was super fun. Every part.
EVERY.
SINGLE.
PART.
{/sarcasm}