S4: After being around Philomena and Owlicious interacting with Celestia and Twilight, Princess Luna will long for a Pet. Luna will enlist the help of the mane six and most notably Fluttershy to help her acquire a pet befitting her personality and duties. The Princess may require a pet that will test the nerves of Fluttershy and company and may even take their search into the depth of the sea home to .....the melodious sea ponies!