On this episode, the prince rallies his men to go against the JSDF. Meanwhile, Itami and his group have a discussion with the elder sage.
It was nice to see Itami and his group learn a bit about the elder sage and the gate's history. Also the mage duel was decent to watch. Other than that, I can't wait to see more of the development of a coming official war between the Empire and the JSDF. Now what's going to happen next for Itami? Overall, more nice new main plot development and some details about the gate.
Conclusion: More nice new main plot development and some details about the gate.