“Freshman Reception!” “Shinkan!” (新歓!)

The second year of high school begins. Ui Hirasawa enters the Sakuragaoka High School along with a girl named Azusa Nakano. The Light Music Club tries to gather new members by all means.

“Bamboo Leaf Rhapsody” “Sasa no Ha Rapusodi” (笹の葉ラプソディ)

On Tanabata, Kyon time travels with Mikuru on a mission exactly three years in the past. Kyon is guided by the future Mikuru to carry younger self, that she put to sleep, and is told to help someone. He finds a young Haruhi sneaking into her junior high school, and is forced to assist her, though keeping his name anonymous. After helping her draw strange symbols on the school athletics grounds, Haruhi questions him on the existence of strange beings, and Kyon suggests that they might exist because he knows someone like her at his school. After Haruhi leaves, Kyon wakes up Mikuru, only to find that she misplaces her time traveling device. They go to see Yuki, who helps them return to their proper time. Kyon wonders if he was the one who inspired Haruhi to attend his high school and start searching for strange beings.

“Christmas!” “Kurisumasu!” (クリスマス!)

Yui’s sister Ui Hirasawa remembers how Yui once attempted to give her a white Christmas when they were little, by putting pillow-stuffing on the tree outside. Ritsu decides to hold a Christmas party for the club, and while her initial plans of holding it at Tsumugi’s house fail, they eventually decide to have it at Yui’s house while Yui’s parents are on vacation. Yui’s friend Nodoka Manabe also gets an invitation. The girls decide to hold a gift exchange at the party, and go shopping for various gifts. Ui prepares a lovely Christmas dinner for the group, which gets a little out of hand when Sawako shows up out of nowhere. After the gift exchange, Yui and Ui end up giving each other just the right warm accessories for the winter. After the rest of the group leaves, snow falls and Yui and Ui decide to sleep together, though, unfortunately for Ui, Yui ends up hogging the sheets. In the New Year, the club decides to visit the shrine to make their New Year wishes.

“The Boredom of Haruhi Suzumiya” “Suzumiya Haruhi no Taikutsu” (涼宮ハルヒの退屈)

Haruhi has once again become bored. In an effort to alleviate some of this stagnation, Haruhi enters the SOS Brigade into a baseball tournament. Due to a lack of players, Tsuruya, Taniguchi, Kunikida, and Kyon’s sister are recruited into the team. However, the team is hopelessly inept, and if they lose, Haruhi might destroy the world. To remedy the situation, Yuki uses her powers to alter the course of the game.

“School Festival!” “Gakuensai!” (学園祭!)

It’s the day of the school festival. The club performs for the first time.

“The Melancholy of Haruhi Suzumiya Part Six” “Suzumiya Haruhi no Yūutsu VI” (涼宮ハルヒの憂鬱VI)

One night, Haruhi’s power is activated without her knowing, and both she and Kyon become trapped in a sealed reality at their school. As Haruhi goes out on her own, Kyon is met by Itsuki, who tell Kyon that Haruhi might have created this world to be alone with Kyon. Yuki contacts Kyon via computer and gives the hint of Sleeping Beauty as a means to return back. Kyon and Haruhi are forced to evacuate when blue giant entities appear and begin to destroy the school and the surrounding area. Using hints provided by Yuki and Mikuru beforehand in order to defuse the situation and escape, Kyon kisses Haruhi as he expresses his desire to return to the old world. It remains unknown whether or not this world is the old one or a new one, however the three other members are glad to see Kyon back again.

“Advisor!” “Komon!” (顧問!)

The Light Music Club does not have an adviser yet. Ritsu Tainaka blackmails the music teacher Sawako Yamanaka so she will be their club’s supervisor. Mio Akiyama writes a song for the school festival but they can’t decide who will be the band’s vocalist.

“The Melancholy of Haruhi Suzumiya Part Five” “Suzumiya Haruhi no Yūutsu V” (涼宮ハルヒの憂鬱V)

Kyon is dragged into helping Haruhi attempting to investigate what happened to Ryoko’s strange disappearance without notice. After a fruitless search, Haruhi tells Kyon about her earlier years, and how she changed from an ordinary girl into her present state. Later that day, Itsuki tells Kyon about the theory of the anthropic principle correlating with Haruhi, and he believes that Kyon is the reason why Haruhi was able to wish of such extraterrestrial beings to exist. Itsuki brings Kyon into a sealed reality, where the latter watches the espers destroy a blue giant entity subconsciously created by Haruhi. When returning to his house, Kyon is told by Itsuki to look after Haruhi.

“Training Camp!” “Gasshuku!” (合宿!)

The girls go to a training camp in a beachside villa owned by Tsumugi Kotobuki family after Mio Akiyama became inspired by a tape recording of the previous Light Music Club members’ performance.

“The Melancholy of Haruhi Suzumiya Part Four” “Suzumiya Haruhi no Yūutsu IV” (涼宮ハルヒの憂鬱IV)

Haruhi is visibly bored and is not her usual energetic self. Ryoko Asakura, the class president, is concerned and asks Kyon to help her. Kyon later finds a mysterious letter in his locker, which directs to come to a classroom, where Ryoko confronts him. Revealed to also be an alien, Ryoko attempts to kill Kyon in order to provoke a reaction from Haruhi, but is stopped by Yuki. Later, Kyon meets Mikuru’s older self that had traveled from the future, who reveals that Snow White is the clue essential to his future. Ryoko was reported to never have transferred into the high school, much to Haruhi’s suspicion.

“Cram Session!” “Tokkun!” (特訓!)

Yui Hirasawa must pass on the midterm exams or else she won’t be allowed to stay in the Light Music Club anymore. The others help Yui study to pass her second chance.

“The Melancholy of Haruhi Suzumiya Part Three” “Suzumiya Haruhi no Yūutsu III” (涼宮ハルヒの憂鬱III)

Yuki completes her explanation of the Integrated Data Sentient Entity and how it relates to herself and to Haruhi. Furthermore, she discusses Haruhi’s powers, and how she could destroy and recreate the world on a whim, even though she is not aware of her powers. Kyon, while simply trying to understand all of what Yuki had told him, is initially skeptical of her story. The SOS Brigade gets a new member, a mysterious transfer student by the name of Itsuki Koizumi. On a day off from school, the SOS Brigade searches the city in groups to try to investigate mysteries, during which Mikuru reveals to Kyon her existence as a time-traveler and her mission in relation to Haruhi. Kyon later confronts Itsuki, revealed to be an esper, and as he learns of the purpose of the Agency. All three of these members confirm that Haruhi somehow altered the reality of the universe three years ago.

“Instruments!” “Gakki!” (楽器!)

The members of the Light Music Club go out to buy Yui Hirasawa a guitar. Yui gets sight of a Gibson Les Paul electric guitar, however, it’s too much expensive, so the girls got part-time jobs so they can afford it.

“The Melancholy of Haruhi Suzumiya Part Two” “Suzumiya Haruhi no Yūutsu II” (涼宮ハルヒの憂鬱II)

Haruhi begins to improve the appearance of the clubroom, but still feels that it is missing something, that being a computer. Going next door, Haruhi manages to obtain a computer by having photographic proof of making it seem that the Computer Research Society president sexually harass Mikuru. She enlists the help of Mikuru to help promote the SOS Brigade by dressing up in a bunny costume and handing out fliers. Later, Yuki invites Kyon to her apartment, where she unveils that she and Haruhi are considered aliens.

“Disband the Club!” “Haibu!” (廃部!)

Yui Hirasawa, a new high school student, wonders if she should join a club or not. Meanwhile, Ritsu Tainaka is trying to revive the school’s Light Music Club. Ritsu’s childhood friend, Mio Akiyama wonders what club to join. Tsumugi Kotobuki runs into Ritsu while looking for the chorus club and Ritsu finds that she must get at least four members to join to save the club from being disbanded.

“The Melancholy of Haruhi Suzumiya Part One” “Suzumiya Haruhi no Yūutsu I” (涼宮ハルヒの憂鬱I)

Kyon enters high school as a first year student and meets a strange girl by the name of Haruhi Suzumiya. During her class introduction, she states that she has no time for normal humans and asks that any time-travelers, aliens, or espers come out and join her. Interested in her, Kyon becomes the first person to solicit a normal conversation from Haruhi. This leads Kyon and Haruhi to form the SOS Brigade. They recruit the soft-spoken Yuki Nagato and the timid Mikuru Asahina.

“A Toast to the Brilliant Future!” “Kagayaku Mirai ni Kanpai!” (輝く未来に乾杯!)

After recovering from their injuries, Kakeru, Najimi and Kizaki chase after the Mixed Juice Akikan. Kakeru begs the Mixed Juice Akikan to return Melon to him, but she just responds by sending a Zero of her to attack her. However, the Zero hesitates to finish Kakeru, and he uses his emotions to recover Melon’s juice to her can. Otoya appears with Misaki, and recovers Yell and Budoko’s cans, allowing Najimi and Misaki to recover them as well. The Mixed Juice Akikan sends all of her Zeros to attack them, but Melon, Yell and Budoko defeat them all, and combine their attacks to defeat her. She explains that her owner is a cat who ran off the moment they had met, causing her to hate Akikans with owners. Kakeru decides to give her the name, Miku, and Otoya points her in the right direction to finding her owner. Everyone heads back to Kakeru’s house for a toast to the future.

“Shockingly! The Strongest Akikan” “Shinkan! Saikyō Akikan” (震撼! 最強アキカン)

A mysterious Akikan attacks Otoya and leaves Kizaki hospitalized. The next day, Misaki approaches Melon and Kakeru saying that Budoko has gone missing. A possessed Budoko shows up and fights Yell, but she is defeated when the mysterious Akikan takes a shot at Najimi, and then absorbs Yell. Kizaki explains that the attacker was ’the strongest Akikan’ who attacks Akikans regardless of being steel or aluminium. Later, Melon gets attacked by Yell and Budoko, who Kakeru deduces are copies. They manage to defeat them, but then the mysterious Akikan attacks. She reveals herself as a Mixed Juice Akikan, who can absorb other Akikans and use their powers to summon Zeros. Melon attacks the mysterious Akikan, but to no avail. She absorbs Melon’s powers and leaves Kakeru with the empty can, leaving him devastated.

“Acknowledgement of a Never Changing Day” “Kawaranu Kyō ni Kansha!” (変わらぬ今日に感謝!)

This episode shows how the Akikans spend their day at home when their owners aren’t around. Melon tries to wash and dry the clothes while batting off the hot weather. Budoko is shocked to find a cat had messed up her hair while she was sleeping, only to find an opportunity to have some fun with a new hairstyle. Yell cuts out some coupons, learns what ‘Yell’ stands for, attracting several cats in the process, and tidies up the house, only to wreck it again while chasing a dragonfly.

“The moment hearts connect” “Kokoro, Tsunagaru Shunkan” (心、繋がる瞬間)

Melon gets a part-time job at a maid café ran by a transvestite in order to pay for her phone bill. While Kakeru teases her about it, Yell becomes intrigued by the idea of work, although Najimi tells her she doesn’t need to. As Melon goes home, she notices some kids playing catch. Yell goes missing overnight and while Kakeru, Melon and Najimi look for her, Melon becomes concerned about how close Kakeru and Najimi appear. They eventually find Yell working part time as a construction worker, and Najimi gets angry at her for not telling her, causing her to run off. When going over to Najimi’s house, Melon gets mad at Kakeru and runs off, and Kakeru notices she had written several unsent text messages saying she was lonely. Meanwhile, Najimi learns that Yell wanted to keep her work a secret so she could buy her a replacement for her watch that broke the other day. Najimi manages to find Yell, apologises and tells her she loves her, and Kakeru manages to find Melon and play catch with her. They then attend a Halloween themed birthday party for Yurika.