"Good to be back after coming home from the Crystal Empire." Twilight told Spike in the library.

"Yes, and now our mission is over." Spike said to Twilight and smiled.

The six ponies and Spike had returned home from saving the Crystal Empire. A month had passed since Babs Seed had went back to Manehattan after a visit. The Cutie Mark Crusaders were in their clubhouse one sunny autumn day. That treehouse had been repaired after Babs Seed had destroyed the stairs of tree. But that day were the three fillies hearing something invisible in the tree house. The invisible entity were greeting the three fillies. Then the fillies ran from the clubhouse, as the invisible things threw things around and wrote things on the wall. Sweetie Belle and her friends told Twilight in her library about what they had seen. Later that day had Twilight found a book about what happened.

"Decades ago there had been a school in a park by Ponyville. and the teacher had found her class dead outside her school for a mysterious reason." Twilight read.

"A home across the school had a strange filly neighbour for visit, and their house had been invaded by devil worshippers." the unicorn pony read.

"Since then the park and the school had been haunted by invisible entities, as the devil worshippers are still around." Twilight were readiing.