But before talking about how they resolved it, there is something I would like to point out, that is the fight between Kotaro and Ryusuke. Seriously, it is really amazing that I am at the edge of my seat watching it! But thanks to a scream from somewhere, it ended and along with it, is the end of the rivalry between the two. What made this "save the civilian" scene really great is Ryusuke. His reaction to the appearance of the MOTW gave us an idea that he is not part of Gorgom. Second is how he fight the MOTW, instead of running away with the civilian, he did some awesome soccer move called "Dragon Shoot" to hit the MOTW, giving Kotaro an idea on who he is.
The plot in a nutshell is to use quartz to create earthquakes and the important person that Taki attacked earlier has the Super Quartz, quartz so powerful that it can last for extreme heats. The plot doesn't sound interesting at first in face value, but the idea behind it is to use stuff things created by humans against them. It's interesting in a sense that finally, they have a plan that is kinda brutal and something that is not that ridiculous!