Thread:MarieCarrasco143/@comment-36353334-20190725185117/@comment-36353334-20190731182223

(Indeed, anyways, onto more ideas, what do you think we should do for Castle Mane-ia)

Here's a summary I made, which can be found on the Season 4 section of the Episodes section of the main Sonic: Adventures in Equestria page:

The Mane Six go to the Celestia and Luna's old castle to research the chest from the Tree of Harmony, finding a diary kept by the sisters that explains the workings of the castle. Meanwhile, Sonic and Knuckles challenge each other to stay the night in the castle, while Amy takes Cream along to the castle to look for old tapestries for Rarity to repair