Once, there was a pony with a dark heart. Soon, it turned darker and darker to the point of no return, and his dark heart caused destruction. It was sealed, but, his black heart yearned for bittersweet revenge.

Centuries later, strange things started happening when Equestria seemed to finally be at peace. Ponies started to disappear and important items were stolen. Only a few ponies saw the connection. It's a shame they didn't act sooner, otherwise, this all could have been avoided.