The Incident at Ponyville Industries

5 years ago, an industry named Ponyville Industries is one of the richest of any industries. It has about 1000 factories spread across Equestria, from Ponyville to Manehattan. The thing is, an accident happened back then.

The industries made a portal that spawned monsters into their dimension was to be destroyed. They built it for the Everfree Forest to keep out other monsters but it failed badly. They had to destroy the monsters and put the portal in their secret locked up lab. It was to be 100% guarded for if any people try to get in the lab

The mare distracted them and went into the lab. She wanted to check the portal to see the monsters. Unfortunately, she got eaten by  the monsters sadly.

Noted by Industry Keeper: former executive of Ponyville Industries.