Throughout Golden Week, Tsukasa and Kagami have been playing together. However, Tsukasa does not know that her sister has actually been waking up earlier and going to bed later than her in order to study and finish homework. After the break, Konata does an all-nighter and manages to obtain an above-average score despite doing no studying during the short vacation. Later, Konata decides to get a job at a cosplay café in order to fund her otaku desires.

It's about that time of year for the girls: athletic festivals! Konata's father is excited because he has been dying for an opportunity to try out his new camera. Kagami is in an eating contest, Konata is in the one-hundred meter dash, Tsukasa has to jump over hurdles, and Miyuki is in a relay race, where she brings the team from third to win the race by using her physical assets at the end. Later, Tsukasa is trying to learn a song on the recorder. Unfortunately, she is not very good. She then is taught by her sister not to blow so hard into it. Later, we see the girls in at school in a lunch line having various conversations about food and public eating facilities.

Winter break is over, and so it's back to school where the girls have conversations about what they did, ate, and dreamt about during their winter vacation.

It's now time for Valentine's Day, which means that the girls will give chocolates to others, but in the case of Konata, she'll give her chocolate to a character online.

Lster, Konata decides to shop at an anime store she previously went to but realized that the item she wanted was at another store. The employees of the anime shop are determined to get Konata (a.k.a. Legendary Girl A) to buy something from their store this time around.

This week on Lucky Channel, Akira and Shiraishi announce the results of the Lucky Star figure poll, telling which characters will get figures made out of them. However, Akira gets really mad when she learns that Shiraishi will also have a figure made.

Konata's cousin Yutaka Kobayakawa, who is also Konata's cousin Yui's little sister, has passed her high school entrance exams and will be living with Konata and her father from now on.

Before a sick Yutaka took her exams, she met a girl who gave her a handkerchief. On the day of orientation and uniform fitting at Yutaka's new high school, she meets the girl who gave her the handkerchief and gives it back to her. They become friends and part ways. It was then that Yutaka realizes that she never asked for the girl's name.

Kagami and Tsukasa come over the Konata's house and become acquainted with Yutaka.

This week on Lucky Channel, Akira feels gypped by the fact that she only had one line in the actual show, but she wasn't on-screen. So, she decideds to initiate "Project Full Appearance in Actual Show!!!" and tells the audience to send in their support to get her in the actual show.

Konata and Kagami talk about getting rare cards from snack packs and female otakus' tastes in males.

Konata, her dad, and Yutaka are annoyed by mosquitoes.

The girls are taking summer classes, and Konata tries to get some of her homework done at Kagami and Tsukasa's house.

The girls all go to a fireworks festival and meet with Yutaka's classmates along the way.

On Lucky Channel, Akira and a special guest, Daisuke Ono, take a quick look at Shiraishi's trek on Mount Fuji.