Rarity hasn't slept in days. Her current commission is being a demanding pain, and her muse is running wild.

After her friends respond to a call for help from Sweetie Belle, they confront the problem together and find that some things can't be solved with mere rest.

Written for the No Author Left Unnoticed competition, with the prompt "Sleep doesn't help if it's your soul that's tired."

And it won second place!