Its the one day of the month when there are no spy satellites floating over their area, to the SoA surfaces so the crew can get some use of their…onsen? Unfortunately, their fun (and double-entendres) are distrupted by Generic Plot Device 607 thinking the SoA is its missing mother. GPD607 latches onto the ship and starts draining its power!

Thankfully, the hitherto unmentioned token loli Megumi knows whats going on thanks to the SCARY MIND READING POWERS which is what causes her to stay in her room, and wants to help find its mother. Thanks to some coaxing by Junior, she goes off with Gram to find its mother whilst Junior stalls the crew from doing anything too drastic, and the day is saved in a fashion which allows everyone to go about their business and get back to enjoying a nice, warm bath.

Oh, and Enora is still going on about that treasure map.

For a minute there I thought I was watching an episode of Star Trek. Its no wonder they combined this with an onsen episode – pretty much the only way they could make this episode vaguely interesting was to have the entire cast go through the whole episode in their swimwear, and even that only made it marginally interesting (Ester looks really odd without all the crap she normally wears).