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.

Tsukasa gets a new cell phone. Kagami teaches her how to text message. Tsukasa text messages Kagami to the point of sheer annoyance. Konata invites Kagami and Tsukasa over to her house and they forget to do their homework.