My Little Pony: Friendship is Magic, Season 3

Shining Armor:
Twily! You made it. We better get moving. There are things out here we really don't want to run into after dark.

Fluttershy:
[gulps] What kind of things?

Shining Armor:
Let's just say the empire... isn't the only thing that's returned.

Shining Armor:
Something keeps trying to get in! We think it's the unicorn king who originally cursed the place.

Twilight Sparkle:
But Princess Celestia said I was being sent here to find a way to protect the empire! If King Sombra can't get in, then it must already be protected. [roar]

Fluttershy:
[gasps] Th-That's one of the things, isn't it?

Shining Armor:
Guh. We have to get to the Crystal Empire. Now.