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.

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 is summertime for the girls; that means one thing: comfortable summer uniforms! Tsukasa and Kagami are fraternal twins, but Konata shows them the similar and different characteristics they share. Konata, Kagami, and Tsukasa each try to put their hair into a ponytail, just to see who looks best. Unfortunately, Kagami is the only one who cannot pull it off.

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.