Everything is normal as the four main characters attend a normal day of high school. They discuss different foods and how they eat them. Later on, Kagami gets sick and all the characters go over to make sure she is okay.

Summer is almost here, and Konata is still staying up late playing online video games, reading manga, and watching anime instead of studying. Kagami and Tsukasa's birthday arrives on July 7 and Konata and Miyuki celebrate with them. After this episode, the director is changed from Yutaka Yamamoto to Yasuhiro Takemoto.

The group, plus Cousin Yui and Nanako, go to the beach for some summer fun. After Yui races down the road, and Nanako gets really lost, they finally make it and spend a night in a Japanese inn. After a day at the beach, and Nanako becoming too drunk to drive, they go back to the inn for a shower and to spend another night. After arriving home, the twins have to clean their bedrooms, Konata discusses cleaning tactics with Kagami, and Miyuki is told she has to go see the dentist, or her mom is bringing the dentist to their house.

Konata and the girls discuss the problems with sleeping during trainrides.

Christmas is around the corner, but before that, Konata learns the truth about the existence of Santa Claus, Tsukasa and Miyuki talk about dentists, Kagami thinks that the people in Konata's class are a little too familiar with her, and Konata has to work during the holidays.

Konata's cousin Yui insults the cops on television (despite the fact that she's a cop herself). The girls talk about how once a person is over 25 (i.e. their teacher Nanako Kuroi), a Christmas cake is any old cake to him/her. The girls also discuss static electricity and why Konata doesn't get shocked by it.

On Lucky Channel, Akira announces that she will appear in the actual show starting in the next episode.

It's Konata's birthday, and her family sets up a surprise party for her when she gets home from work. All goes according to plan until Konata calls and says that her coworkers are throwing her a party and that she'll be coming home late.

The girls discuss what their goals in life are.

Kagami has a bad day when she gets bothered by little annoyances and ends up going to a store to buy a drink but forgets her wallet.

Things get worse for Kagami when her older sister Matsuri scolds her for neglecting to buy groceries for dinner.

On Lucky Channel, Akira and Shiraishi have a special guest: Meito Anizawa, the manager of the anime store that desperately wants Konata to buy something from his shop. He talks about the three factors that determine an anime's success.

Konata and Yutaka catch a cold, and Yutaka's friends, Minami, Hiyori, and Patricia, come and visit her. They, Konata, and Yutaka discuss younger-sister-moe, Minami's lack of breasts and how Hiyori doesn't want Yutaka to read her doujin manga.

After seeing a TV program about how xylitol chewing gum can eliminate cavities, Miyuki decides to test this out. As a result, one of her fillings comes out and she has to go to the dentist.

Kagami and Misao play a video game together. Although Misao is terrible at playing them, she seems to be having more fun than Kagami who's playing to win.

Patricia tells Kagami what music she's been listening to lately and how much she would like to have a maid.

Miyuki tells her mother about her friends' opinions on Minami, but they seem to contradict with what Miyuki's mom recalls from Minami's previous actions.

It's almost time for the school's culture festival. While the girls are preparing for their classes' themes for the festival, Patricia proposes that she and the girls in her class should do a cheerleading act for the opening ceremony of the festival. Patricia "persuades" Konata into performing the routine with her, who in turn gets Kagami, Tsukasa, Miyuki, Misao, and Ayano to do it as well.

Akira Kogami finally makes an appearance on the actual show, although she and Shiraishi are still on bad terms.

Before the opening ceremony, the girls practice the cheerleading act one last time to the song, "Motteke! Sailor Fuku!"