It's a sandworm that's been feeding on the spiritual power of the royals, and it's about to attack the royal carriage. The three heads of the carriage are on the other side of the border, and the sandworm is about to shoot down the carriage. So, sis, you're going to have to deal with it alone. The sandworm looks like a real beast, but it only absorbs "sure enough" of its spiritual power, which is why it doesn't scare the heck out of you. You know, the kind of thing you'd get when you were a kid playing with your neighbor's dog. The only problem is that the worm's got a low enough level of spiritual power that it won't kill the carriage, even if it does kill the people in it. But, you know, it'll kill you if you try to