A transfer student arrives on campus, and the three members of the SKET-dan introduce themselves, hoping the new student will join, but he politely declines. He returns soon after, covered in red paint as the apparent victim of bullying, asking the group for help. After investigating, they discover the culprit is actually the transfer student himself, who was operating under duress from the school bully and childhood acquaintance. After setting things straight, the new student is able to fit in comfortably at the school, and the members of SKET-dan look forward to their next task.

The next person to request the aid of the Sket Brigade is a "self-proclaimed" samurai of the Kendo Club. In the end, the sket dan helps him win the tournament. The client in this episode is viewed like an idiot who claims that he is a samurai.

Himeko was once a delinquent feared far and wide, the legendary yankee Onihime. She's totally reformed now, but starts to hear odd rumors that "the Onihime has started going on a rampage again.

Saotome Roman, member of the Manga Club, runs into her "prince" on a hill road on her way back from school in the rain. In order to meet her prince once again, Roman comes to the Sket-dan to ask their help, but...

Yuuki Reiko, member of the Occult Club, barges into the Sket-dan's room holding a picture of one of Kaimei Academy's seven mysteries, the "Ghost of the Incinerator". The Sket-dan are on the case (mainly Switch), trying to find out the truth behind the picture, and getting Shimada Takako from the Newspaper Club mixed up in it, too...

Tsubaki from the Student Council tells the Sket-dan they're going to be disbanded. In order to prove the Sket-dan's effectiveness, Bossun takes on a request to put on a play for a local preschool. But the Student Council also takes on the same request, and the battle is on!

Tetsu comes and asks the Sket-dan to meet with someone in his place. It seems like a sickly girl who he was exchanging messages with under a false persona wants to come see him...

Momoka has come to the Sket-dan for help. It turns out that she's been asked to audition for a voice role in an anime after being discovered during her performance at the preschool puppet show. Switch leaps at the opportunity to start her harsh training in the way of anime!

Manga artist Hinohara Enta has come to interview students at Kaimei Academy. Bossun thinks he can get popular if he becomes the model for the main character of a manga, but everything he says ends up being way too "boring" and "plain". Then, something completely out-of-the-blue happens!

The Sket-dan is having fun trying to take their minds off the upcoming midterms, when they hear rumors of a mysterious DVD that will curse you with bad luck if you watch it. Just then, Kuramoto Ayumi comes in with a simple request, to help cheer up her friend who has been acting strange lately. But there's more to this than meets the eye, as the stoic Yagi is acting like someone who has seen something they shouldn't have...

Yabasawa-san really wants a certain part for her avatar, and asks the Sket-dan to join a game tournament put on by a cellphone game site. The Sket-dan isn't particularly enthused about the prospect, but when they find out that the Student Council will also be participating...

The second game of the Bibage Battle is a real show between Shinzou and Tsubaki, coming to a truly cinematic finish! Then the curtain rises on a sharp-shooting (or is it, sharp-tongued) battle between Switch and Daisey!

It's the second to last round, and it's a battle of love between the pitch perfect rich girl and the klutzy, head-in-the-clouds Roman-tic! Which one of the will break their team's hearts?

Uchida Takaaki comes to the Sket Dance with a simple request: make him popular! Bossun and company immediately set their sights on getting Uchida to win a Mr. Popularity contest in their class, but Uchida's shy personality makes it difficult for him to stand out. Can Sket-dan Productions mold him into a star in just one week?!

Bossun may have a way with words, but these clients were born with their feet in their mouths! First is J-son-sensei, the shop teacher with the glass heart and looks straight out of some horror movie! Can the Sket-dan help him find love? A man of few words and many offstandish poses, "Dante" perhaps poses the greatest riddle of all... Can the Sket-dan help this Fallen Angel find his Wings

Kaimei Academy's music festival is coming up! Bossun is bummed that Himeko and Switch each have joined up with bands to participate. But before long Bossun is invited to join a band and the three are set to compete against each other!

Bossun makes friends with a violinist while practicing for the upcoming Rock Festival, Sugisaki Ayano. He learns from her how fun music is, and in no time the curtain rises on the Kaimei Rock Festival!

Yamanobe-sensei is back, and now he's trying to get everyone in the Sket-dan to play a nutty board game called Hyperion. Everyone except for Himeko, as only men can appreciate this game, supposedly. But the epicness gets Bossun and Switch very enthused about the game, and soon they find themselves heading to the world tournament...

A writer for a local newspaper is coming to interview and take a photo of the Sket-dan, and Himeko demands that Bossun get his hair cut. But when Bossun refuses, Himeko takes things into her own hands... What could possibly go wrong? Afterwards, it's the principal's birthday, and the Student Council is planning a surprise party for him. But when the President makes a mess of his prized bronze bust, the principal will be in for a whole different kind of surprise...

Bossun and Himeko get into a little fight, and things are made worse when Bossun and Switch are invited to a mixer with Seiji and three other girls. Bossun is rarin' to impress with his comedic flair, but he's in for a tough crowd. Without Himeko's fiery comebacks, Bossun's humor falls flat...

Bossun bumps into Himeko outside on the weekend, and they happen to spot Switch and Yuuki meeting up nearby as well. Their curiosity piqued, they decide to trail the 'odd couple' into a shopping mall. Turns out Switch is helping Yuuki with a request- to choose and purchase a laptop, so she can create a website dedicated to her passion of all things occult. Hijinks ensue, with the embodiment of 'Otaku' and 'Occult' clashing their interests and respective positions(supernatural vs science) against each other all the way(in their usual fashion). Nonetheless, they seem to be getting along well(again, in their own way), and even Bossun and Himeko note how unusual it is for Switch to be going out of his way to help his 'archrival', Yuuki. Switch and Yuuki then bump into her old crush from middle school, Kobayashi, who was there with another girl. He talks down to Yuuki, which seems to rub Switch the wrong way. After he leaves, Yuuki confides to Switch her past in her middle school: she was melancholic and had few friends, but wanted to try falling in love. She started having feelings for Kobayashi who was rather popular with the girls, but he turned her down citing her scary appearance. After hearing the story, Switch decides to bring her around the mall to do a total makeover for her. Later, after being abandoned by the girl he was with, Kobayashi spots a beautiful girl standing alone by a fountain outside, and hits on her. This turns out to be post-makeover Yuuki, however, and together with Switch, she finally turns the tables on him. On the way home, they bond over the incident, with Switch still denying any romantic interest in her. However, she notes, he will go with her again the next day to shop for the laptop. At the end of the episode is an omake bit, "Resort Dance", which has the girls at the beach playing the Japanese word game Shiritori.

The principal adores his grandson very much and asks the Sket-dan to prepare a picture play to entertain him. They decide to base the story off of Momotaro, but change things up from the usual... Afterwards, he asks them to play with his grandson for an afternoon, but the kid doesn't seem interested in having fun at all.

Momoka comes to the Sket-dan to ask for help in her voice acting job. In an upcoming episode, she needs to play Liberty Maji back when she was little, and Momoka is having a hard time grasping the mindset of a child for her acting. The Sket-dan try to help by playing children's games with her, but it isn't until she and Himeko accidentally drink one of Chuu-san's drugs that they can really experience their childhood all over again!

After helping Yosshi arrange a date, the Sket-dan run into Shinzou arguing with his younger brother. Unlike the proper samurai, his younger brother is rebellious and they don't seem to get along... The two's relationship reminds Switch of his own brother and the events of the past...

In the second Arc finale, Switch's "origin story" continues as Sawa-chan goes to young Switch and his older brother for help from a stalker. In a moment of spite stemming from jealousy, though, Kazuyoshi sends Switch and Sawa off on their own to buy personal protection items. While they're gone, Sawa's friend Yukino warns Kazuyoshi that the stalker is also a slasher. Kazuyoshi means to go out after his little brother and the girl he loves, but fate intervenes...

Bossun, Himeko and Switch are having a normal day. But, suddenly, Gintama's main characters (Gintoki, Kagura and Shinpachi) appear!

The Sket-dan get a new assistant homeroom teacher (who wants everyone to call her, Onee-san), but she's a klutz and is upset she can't be a good role model for the students, so the Sket-dan ask Chuu-san to help with some of his strange drugs. Later, Switch goes through some old inventions of his that didn't work out as intended...

The Ninja squad Thief-dan is sent on a mission to go rescue Chuu-san's captured daughter! Then Rocket Dance blasts off into outer-space! Is there anywhere the Sket-dan can't go?!

When the broadcasting club begins a weekly television talk show, their first guest is charismatic Student Council Shinba Michiru. The idea is for him to lead a cooking segment, but the show becomes chaotic due to Shinba's less-than-helpful assistants, the manipulative Agata and moody Daisey.

Dante is back, and this time he's missing something from his pencil... But could he have a crush on someone? Plus Bossun and the gang discover another of captain's amazing talents, and try and put it to good use, but...

The Sket-dan get obsessed with collecting a full set of "Super Slim-Figured Slenders" gatcha figures... Next Momoka's seem to have fame and moe get her head. Can her friends get back the real Momoka?

Shinzou asks the Sket-dan for help with a makeover to make a good impression when he meets Megumi-dono, a friend he made online, in person. But is shinzou in modern clothes even him anymore? Can Shinzou somehow rectify his samurai beliefs with modern garb? Later, Himeko tries a new workout video, but it doesn't "work out"....

The Sket-dan is getting filmed for an in depth story by the AV Club, and their task is to unravel the mystery of the glass man, a case of serial window breaking's around the school. As the Sket-dan narrows down the suspects, the culprit becomes clear, but could this case be a little bit too easy?

Roman's got a new club member, and she's gotta show her the basics of shoujo manga! So she decides to draw her own "how to draw manga" guide, with hilarious results! Next, Onee-san is back and clumsier than ever! is there anything she's actually good at?

The Sket-dan is challenged to a battle of wits by Enigman, the masked president of the Quiz club (and his lovely assistant Quettion). Later, a drop dead gorgeous second year comes to the Sket-dan to ask for advice... about love? Can the Sket-dan unravel the enigma of love?

Himeko breaks her Cyclone while helping a client who was being shaken down for cash from a bully... But when buying a new field hockey stick, she's reminded of her past...

In the third Arc finale, Hime goes to a high school far away to escape her violent past, but the rumors of "Onihime" have spread like wildfire. When a newfound friend gets into trouble with small-time Yakuza hoods, will Hime step in at the risk of exposing her old identity? Also: the secret origin of Sket Dance!

The Sket-dan is roped into helping with Onee-san's ex-kid's show's stage performance, but they never would have thought it'd turn into a race against time to bring smiles to children's faces and prevent severe bodily harm to themselves!

Yamanobe-sensei is back, and this time he's brought a vintage game console for Switch to repair. The Sket-dan ends up getting hooked on the one game he owns for it, but something smells fishy about it...

Kids are getting shaken down around school, and there's only one group to call! The Sket-dan! The Student Council! Wait, both?! Can Bossun and Tsubaki stop hating each other's guts for long enough to catch the bad guy?

Enigman and Quettion are back, and their next victims are the Student Council! With the super-genius Agata stuck in a staff meeting, can the others make it through and win to get an embarrassing photo back? Later, Enigman is back to ask the Sket dance for advice on his date with Quettion!

Momoka is the lead actress of a stage play, but she's having trouble with the bland script. Can the Sket-dan teach her how to spice it up?! And then another Sket friend has a success story: Roman, who's just made her manga debut! She shows her story to the Sket members, but will Himeko be able to keep from trashing it?!

Himeko saves a first-year student, Jin, from some punks, and he falls head over heels for her. In order to get him to stop hounding her, Himeko tells Jin that she's already got a boyfriend... Bossun! Now all she has to do is prove it to him...

The Sket Dance help Captain rekindle a broken friendship by helping her find a lost tin of candy drops after she gave one to the boy Akina likes!

J-son-sensei has another meeting with a prospective marriage partner, but this time the Sket-dan has a plan! Meanwhile, Onee-san is also asked out on a date!

One day, Bossun, at age 14, discovers a box of video tapes in his mother's room. The videos show his young mother, a pretty women named Haru, and a man who looks just like him...

On Bossun's 15 birthday, he finds out the truth about his parents. Unable to cope with the tragedy, he lashes out, only to meet the child his father once saved when he was a kid, all grown up, who gives him a mysterious letter his father wrote addressed to his real mother, and one addressed to him...

It's the kaimei festival, and Bossun's class is doing a maid cafe. Everybody's parents show up, and Bossun is approached by a man who claims to be the doctor who delivered him. He has finally decided to tell Bossun the truth of what happened that day, which he has kept secret for 17 years...

Countries from around the world gather together once every four years to celebrate the most ancient of traditions, the pinnacle of sports! Testing their own passion and training against the best the world has to offer, the Sket-dan goes forth, with the pride of their country on the line! Will the goddess of victory shine down on our heroes? Will they be able to claim that yes, they are the winners of the Genesis World Grand Prix?

After a bit of horsing around, Himeko accidentally breaks Bossun's fingers and wrist. To pay him back Bossun makes Himeko sign a contract making her his servant! But having Himeko as a maid isn't all it's cracked up to be. Meanwhile, Jin is back trying to woo Himeko, but when he comes to observe the Sket-dan's activities, all he can see is a loving, bickering couple.

In the Season finale, Bossun and Tsubaki partner up for the first time to work on a project, but together, this brother duo is highly combustible! Later on, Tsubaki meets Bossun's family and has the chance to see his real parents for the first time... but does he want to?