The ghost race is ready to fight the demon king, but they're afraid of him because he's a mortal. They've got their own way of dealing with him, they say, and they'll kill him if he tries to fight them. But the ghost race can't kill him just yet, because he has a lot of "guilt" in his system. So they have to use "dirty tricks" to get past the ghost queen. The ghost queen has her own "soul power" , which means that she can kill the ghost king. So, they need to use a "dirty crack" . And that's how they got past the queen. Ugh. Ugh! Ugh!