Talk:Twilight's Kingdom - Part 1/@comment-24908786-20140507012636/@comment-26973802-20140507164129

Since Cerberus presumably works for Celestia and Luna, obviously Tirek has to be the one keeping the princesses in Tartarus. Once the Mane 6 defeat him, they should be able to get out - if they survive all the monsters in there, seeing as how they have no magic at this point. If they're not rescued at the end of the episode, it's because they're dead.