I wrote this story when I was fairly young and it's very poorly written. I highly recommend you read the spinoff, "CMC: The Third Generation" instead! It has much better writing, storylines, and character arcs!
When a group of 6 best friends team up to defeat a monster, they find that they represent the elements of harmony. But a young pegasus gets jealous of them and becomes the pony of destruction...
Can the friends defeat her?
What will happen?
(This was written BEFORE season nine!)