Story Based Off of a video

Does anyone feel up to making a story based off of this video:

(Please watch before reading further)
Watching it, I think it would work great as a one shot. A writer could potentially tell a bit of the back-story to make the setting and such clear, move into the chase to have it be the first major scene, transition to Derpy's arrival and fighting the changelings, and end with the episode's scene of having all the changelings driven out by Cadance and Shining Armor. There could even be a scene where Derpy is unable to fight the changelings because they shift to look like her daughter.

Sounds like a great story if properly written.