Push Play was only trying to get his big break in filming. He chose to dive into one of the most enigmatic mysteries of all: the origin of King Sombra.
Now Play is fighting against the very thing he was trying to find out about.
But he's not alone.
Not only are the crystal ponies, the mane 6, and the princesses on his side.
The empire's original heir to the throne has returned.

This is more of an alternate story than headcannon.