The home port is throwing a costume academy fair. After being urged by North Carolina to dress up, Javelin and friends go and really enjoy the academy fair with an embarrassed Honolulu. Who is going to be the lucky one to get the coveted premium prize?

Javelin and friends find Bismarck at a party with a serious expression on her face. Will she be able to successfully ask Tirpitz for dance and then lead the little knights and the elegant ladies?

Javelin and friends go to the big bath in order to pamper their bodies after a tiring exercise. However, due to a broken boiler, there is no hot water! That's when Zuikaku and Shoukaku begin building an outdoor bath behind the dorms.

Admiral Graf Spee is trying to make new friends, but things don't work out so well. She then tries to find common interests with Ayanami... Like delicious snacks and how to spend your days off.

Belfast is aspiring to be a first-class maid, and Bel-chan is practicing serving people. In order to know how different individual masters might feel, she asks Ayanami and Laffey to be her training partners.

Tickets to "Manjuu Land" are found in a box gifted by Yukikaze. Javelin, Yukikaze and the others, along with Nagato and Mutsu, are out to have as much fun as possible at the amusement park.

While cleaning the storeroom, Javelin and the others find a mysterious treasure chest with Laffey inside! But it seems like Laffey's lost her memory?! How will they possibly get their precious friend's memory back? Well, you'll just have to see for yourself.

On this perfect mid-summer day, Javelin and friends are hungrily looking forward to the barbeque. ...but unfortunately Rodney's misunderstanding leads to all the food being gone. The girls then set out to find the blessings of the mountain and the fruits of the sea...

A suspicious shadow is trying to break into the office. After determining the identity of the shadow, Javelin and friends end up cleaning the office along with Mikasa-daisenpai. And what's this behind the shelf, something highly classified?

Instead of coming to class, Ayanami is playing games, making Javelin and Z23 agonize about how to make her come back. Out of ideas, they go to consult Akashi, but they get more of an advertisement for a cute new invention than a consultation...

Javelin and friends are exhausted from the summer heat when Baltimore shows up. When they offer to help her, they're met with an unimaginably tough schedule!

This is a slightly different world where girls named after warships exist. Various organizations worked together to bring this academy to life, and this is where the fun and exciting school lives of these girls is about to begin!