on this episode of My Little Pony: Friendship is Magic: Fluttershy follows the trail of a wounded animal deep into the forest only to find the doorway of a Sanctuary Forest, a traveling dimension where pain does not exist and death has no dominion. there she finds that the Gatekeeper has been mortally wounded while exploring outside, allowing misery and death to enter the sanctuary and claim all the creatures taking refuge within. to save the forest she becomes the new Gatekeeper, transforming her body into a living gate that absorbs all the pain and hatred from the outside world. but in the hustle and bustle of serving as a dam for death itself, can she teach princess Luna how to properly care for her new kitten?