There are patterns in all things, even if we don't look for them. After spending a few years in Ponyville, Max has gotten pretty good at spotting them, so he invites a friend of his to watch the fireworks.

Not so much a sequel as a story set at a later date in the same timeline. Inspired by Joe Diffie's song, Third Rock from the Sun. And yes, Max is my "I have an idea, but no real story premise at the moment" changeling character.