What if instead of Spike, it was all of the Mane 6 that entered into the parallel world to get back Twilight's crown back from Sunset Shimmer? Along with the help of a different group of friends who had their friendship broken?
After the events of "Discord Teaches Philosophy," the Spirt of Chaos takes up the role of a Substitute. However, after spying on the main teacher, he decides to step in.