So I apparently thought this episode will be entirely a beach fan service but it wasn't, surprisingly. I'm not saying it's a "bad thing" because it would have turned out a really generic episode that I see everyday if it was like that. Anyway, our middle school girls go to a resort and take a break from school (once again). Though, there is finally a big plot and more serious action at the near end which is sweet and also, the resort will become a battlefield on the next episode. It's just cool that the creators were able to stuff that there along with fan service.
But the thing I need to point out (and might have mentioned this before)is that I don't really see any connections between the episodes so far in the series unless it's a "big plot". All the events and story doesn't really make any sense when you put them together and it's just plain random. Basically If you miss an episode (unless it's a big plot part), you wouldn't really miss on anything. So there's no one big story in the series I notice. However, I could be wrong. So overall, nice fan service with more action stuffed in.
Conclusion: Nice fan service with a serious plot and action stuffed in.
Personal Note: Will the Japanese teacher become child molester soon? I wonder...