A mist had spread out through Equestria causing memory loss when inhaling it for so long. There were strange incidents as this mist remained. Fluttershy, being one of the first to experience the strange incident. Only to find strange leaves popping out of her mane as she tried to search a way out of Everfree forest, only to realize. She couldn't find any sort of memory how she ended up there.

The mist seemed to appear out from nowhere, and took ponies who would be in contact of the mist and bend them to become one of the mists victims.