User Score: 1379
AIRED ON 11/30/2013
Season 4 : Episode 3
AIRS ON 12/7/2013
Season 4 : Episode 4
NEXT EPISODE AIRS 12/7/2013 AT 10:30AM ON The Hub
The ponies all head to Celestia and Luna's old castle, each of them with a different reason for being there. But soon, strange stuff starts to happen and the ponies start to believe that the castle is haunted.
Twilight and her friends head off in search for the Tree of Harmony, where the Elements of Harmony were first formed, in hopes that it can help them find Celestia and Luna.
Twilight is a bit nervous about her new responsibilities as a princess. But that's the least of her problems when Celestia and Luna go missing and the Everfree forest starts to invade Ponyville.