Charlie's cousin Frankie comes to visit her. Charlie is having difficulty keeping up with all of her friends who all seem to want to spend time with her at the same time. But luckily Frankie saves the day by suggesting that Charlie and her friends make their own Sleepover Club.

Tayla wins two tickets to Spectaculand and she can't decide who she will take with her. The girls all attempt to get Tayla to take them by being nice to her. The blockheads hatch a plan so that she'll go with Jason, but it all backfires. In the end she gives the tickets to her mum and little sister since she could not pick only one of her friends.

When Brooke has her first sleepover she is embarrassed about what the girls will think of her parents so she keeps making excuses to avoid it, and ends up pretending that Lisa is pregnant. However the girls still want the sleepover and end up deciding that they should turn it into a baby shower for Lisa. When Brooke hears her parents talk about the baby, it turns out that Lisa really was pregnant.

When Tayla is upset about everyone in The Sleepover Club winning competitions except her she enters a competition to make a front cover for a girl's fashion magazine, but it is really bad. Jess gets a chance to secretly improve the cover before she sends it. Tayla ends up being one of three lucky finalists. The competition goes to her head and she ends up neglecting the SOC girls so they fall out with her.

Maddie wins a bear at crazy golf and Simon steals it and the blockheads send photos of the bear to taunt the SOC girls. Brooke had hidden a locket for her mum's birthday inside the bear's backpack so the SOC girls dress as spies and secretly go undercover inside Jason's house to retrieve the bear but can't find it end up stealing Jason's hat as a ransom for the bear.

Barry, a boy at school who has no friends, is tricked by Jason into thinking that Maddie likes him but she really doesn't. Eventually he finds out she never liked him and Maddie and Barry get revenge on Jason. Meanwhile the SOC girls are getting ready for the school dance. Barry and Maddie secretly have dance lessons together. Krystal and Caitlin enter the school dance contest thinking that they are sure to win because Krystal's dad is the judge. But in the end Maddie and Barry end up winning.

The school principal's budgie isn't feeling well. The girls offer to look after the bird. Unfortunately, they lose it. The SOC girls end up getting a new budgie just like it and try to train it to be like the one they lost, but it is not convincing enough. Eventually they find it, just in time no thanks to the blockheads.

The Sleepover Club shoot a film at a haunted prison that closed 14 years ago, for a school project. Meanwhile, the Blockheads shoot their film there too and scare the SOC. The girls think up a plan to get them back good.

Tayla is failing miserably at history and if she doesn't pass she is going to be sent to another school called St. Anne's. At first she isn't bothered and she gives up. But when she sees the school uniform she freaks and starts studying. She's still no good but then she finds a weird but helpful way of learning.

The Blockheads are out to prank everyone in sight during the school's weekend at camp. The SOC must team up with an unlikely ally to get revenge. They get their revenge but what will the consequences be?

Jess wins a contest based on her favorite TV show 'Beach of Hearts' and gets to hang out with the show's main actress. But Jess discovers that she's not all she seems on TV, she's horrible. But who will she choose, her or the SOC?

Charlie has a crush on a surfer called Angus Miller, but grows increasingly jealous of the time he spends with Jess.

Krystal dumps Caitlin as a friend, causing Jess to take pity on her and invite her to hang with the SOC. But Krystal sees this as a way she can use to her advantage and gets Caitlin to try and find out the SOC secrets. The SOC find out about Krystal's plan and luckily Caitlin and Krystal don't find out any of their secrets.

The sailing contest gives $500 to the boy that wins and only $250 to the girl that wins. So Maddie decides to enter as a boy called Buddy Guy. But the Blockheads also have their eyes on the prize. Maddie has to dress, talk and act like a boy. But can she beat Jason and prove a point that the boys and girls prizes should be the same?

Charlie is thrilled to receive a trial on the school paper, but finds it impossible to get a good story. The rest of the girls secretly invent a story to help her out. But it ends up turning into an investigation and nearly making the lunch lady lose her job.

When Jason throws a sweet at Charlie during swim practice, she zooms off and wins the race. She then gets on the swim team, and it starts to get to Maddie as sport is her thing. Maddie decides to beat Charlie at the things she's good at. The whole time Krystal is plotting a plan so that she can win the swim race. Will Maddie and Charlie realise and can Maddie beat Krystal in the race?

Mrs. Pendrety, a sad old woman, is knocked over by accident when the girls are chasing the Blockheads. Charlie invites her to stay with her until she feels better. But she has been annoying the girls by making them be her slave. But then, it gets far more exciting when they give her a makeover.

It is own clothes day at their school and the other girls feel guilty for ruining one of Brook's T-shirts, so they go shopping for something new for her to wear. But when she arrives at school she has a shock when she sees Krystal has the exact same outfit as her. What will the sleepover club do to cheer her up? And how far will they go?

Maddy's room is a mess so the other girls decide to clean it for her while she is out surfing. Whilst cleaning her room though they find something that might result in Maddy leaving the club. So to prove how much they will miss her, they show her how much she means to them. Meanwhile Jason wants to get rid of his snake so he can get a Python, And Krystal wants a dog.

Caitlin's sick and Krystal can't stay at her place when her parents go away for the weekend, so her parents leave her at Charlie's house. Krystal pretends to be nice and tries to become part of the SOC. just to win a bet with Jason. They find out her plan and get revenge by making her do tasks which they tell her are required for entry into the sleepover club.

Maddy's older cousin Reese comes to stay. When the girls netball team Coach has to go interstate they ask Reese to be their Coach. Then Krystal is determined to beat them in the grand final and she starts a bet. But the girls end up tricking Krystal's team into thinking they know their gameplan, but it was a fake gameplan so Krystals's team aren't prepared and the SOC girls end up winning.

There is a baking competition in school and Brooke's cake looks set to win. However after break they come back to find it has gone missing and Brooke is determined to find out who is responsible.

Charlie has a secret diary which lists really mean things about the rest of the SOC's. Meanwhile when it goes missing the blockheads try to read it but find out that it's voice activated so they try to secretly record charlie saying the passwords. Caitlin also has a secret but she doesn't want to tell Krystal. The Sleepover Club find Charlie's Diary and everything turns out alright.

Tayla's 13th birthday is coming up and the SOC girls want to throw a surprise party. They act suspiciously around her as they try to keep it a secret. Krystal tries to makes Tayla feel like the girls are avoiding her because they don't want to be friends with her anymore. However it ends up ok in the end much to Kristal's hatred.

When Charlie makes a presentation at the abandoned orphanage the Blockheads notice that the book that Charlie used dropped out of her bag. That night the girls were suppose to see The Galaxy SuperNova premiere. Charlie and Jason end up locked inside the orphanage for 4 hours and the girls miss the premiere.

When Charlie gets to be the director of the school play, the SOC is relieved and Tayla thinks that charlie will let her play the part of Cinderella, but when Charlie realises that Krystal is a much better actress, she let her play the part and Tayla is upset. Also there are disagreements between the blockheads and Krystal which upsets Charlie but in the end Charlie finds a way to please everyone and they all put on a stunning performance.