This episode is satisfying, and while there are funny scenes interspersed, they don't detract from the overall tone. What does detract from it, however, are the over-the-top effects for some things. What on earth is that mountain-destroying laser straight out of Dragon Ball Z? Then the resolution is pretty ridiculous too. "We almost killed you and caused a coup in your family, but now that we see you can annihilate us with one blow, we realize we were wrong, sorry :("