Mitchell accidentally erases himself from history after deleting his school record. At first his anonymity is fun but when his friends forget him and he starts to disappear, he calls on Samia, the one person who can remember him, to help reboot his existence.

When Templeton's Science Fair attempt to blast into the cosmos backfires, he accidentally instigates a full-blown alien invasion - by aliens that seem remarkably familiar and have come to pay homage to the creator of the Universe...Templeton?!

When Becky coaxes a wilting plant back to life in the old Strange Hill Greenhouse, she gets more than she bargained for with an outbreak of plantlike PE teachers threatening to exercise the world into submission. Only Mitchell's sarcastically planted chicken nugget beast can save the day.

The Annual Strange Hill Festival is approaching. Not staying quiet about his dislike of folk music, Mitchell drives Miss Grackle mad - and perhaps to an early retirement - and the kids get a mysterious and oddly nice new music teacher who may have a much deeper connection to the ancient Spring Festival than anyone realized. It all leads to a furious musical duel between Mitchell and his friends and an ancient force of corny, irritating music.

Mitchell, Becky, and Templeton are forced to watch a horrible old school safety film from the 1970's during School Safety Week, when suddenly they find themselves trapped in the film itself.

It's Valentine's Day and whilst attempting to sabotage Abercombie's zero tolerance to romance, our trio discover a portal to the inside the Head's head! What at first seems like the best thing ever soon turns into a nightmare as the bullies gain control of the Headmaster. The only way to stop them is to test the old adage: the heart rules the head.

When Mitchell is issued a strange simulation baby doll to teach him responsibility, his first reaction is to bin it. Freakishly it keeps coming back and he soon realizes it's alive! From apathy, to panic to parenthood, Mitchell soon appreciates that having Mitchell Junior around might not be so bad after all.

During the first day of exams, an old clock tower high above Strange Hill High gives Mitchell an idea as he's running late to class.

With a mysterious book at the cause of many students' disappearances at Strange Hill High, Mitchell and his friends investigate the creepy, dark, and lonely school Library.

Mitchell must pass the 'Hardest Maths Assignment Ever'. He cheats and ends up earning the mythical grade of 101%, breaking maths and the world as we know it in the process.

During a swimming test in the middle of winter in the dreaded Strange Hill swimming pool, the kids discover a mysterious paradise island in the middle of the pool. They also soon discover the isle's longtime sole inhabitant, a mysteriously huge exchange student named Ken Kong. When Ken returns to the school with our kids, it throws Abercrombie into a panic. Will Ken destroy the school? Will Templeton's woodwork project save the day? Will Becky guilt Mitchell into fixing the problem? Probably!

Mitchell's desperate attempt to start his Christmas holiday early is scuppered when he accidentally traps everyone in the freezing school. Forced to spend the holidays together, the students and teachers soon discover mysterious things happen at the school over the Christmas holidays, things involving Santa, menacing elves and as Abercrombie goes mad, a very cheery parody of "The Shining".

Strange Hill High's computers are hopelessly out of date - breaking down, going up in smoke, and simply falling apart. But with the new technology at the school, it seems all too perfect and it's up to Mitchell and his friends to find out what's behind the changes.

Mitchell is bitten by a rabid Deputy Head and, every time the school bell rings, transforms into the disciplinarian were-teacher, Mr. Tanner. If the curse isn't lifted before Mr. Tanner signs a permanent contract, Mitchell could be doomed to spend the rest of his life as a teacher at Strange Hill!

A new school security system is installed - and the cameras seem to record what happens in the future. When Templeton becomes Security Monitor and goes mad with this incredible, all-seeing power, the very existence of Strange Hill is threatened.

Competition between new sweets being served by the school chef and Becky selling healthy snacks gives a surprise to the trio when they find out what's behind the new menu at Strange Hill High.

Mitchell and his friends write news stories for the school paper in order to get tickets to see their favorite rapper in concert. However, something extraordinary happens and it leaves them having to put back the pieces.

When the trio gets tossed into detention on a snowy day, they're put in charge of cleaning the old and cramped Science Room. While cleaning, they discover a device that soon takes things out of proportion.

Becky wants to audition for the school play, Scary Poppins, but Miss Grackle, the music teacher, sings her to sleep. Becky dreams of a crazy dream world inhabited by an evil monster named The Grackle.

It's Aprils Fool's day and Mitchell is pranking in overdrive. Before too long he's pranked everyone and unleashed a dormant beast of Embarrassment that lives under the school. Mitchell must save his friends - and Tyson - from 'The Embarrassment's' disgusting lair by going toe to toe in a shameful game show.

While cleaning the lavatory on detention, the trio discover an ancient knight guarding an ancient mystical toilet. They get more than they bargained for as Mitchell is declared King of Strange Hill.

Election Day is coming and it's Becky's perfect chance to win and gain the popularity she's always wanted. But with competition at her doorstep, one creative idea from Mitchell gives her the competitive edge. But will it go as planned?

Things have been disappearing at Strange Hill High, and Mitchell finds himself as the prime suspect. Can he clear his name and find out who the real perpetrator is?

Becky wants to join the cheerleading squad but is stopped by the stuck-up cheerleaders. Instead, they allow her to become the team mascot, which in turn brings them all good luck, whether it's winning a game or scoring well on a test. But soon she discovers that with every piece of good luck, comes a piece of bad luck

Looking for a place to hide and avoid his teachers after not doing his assignments, Mitchell stumbles on an unused classroom - a room that looks like it hasn't been used for 100 years.