With the pressures of high school in their near future, CJ and her two best friends decide to embark on a series of middle school adventures while they can still take risks and have fun.

CJ, Fen and Crispo start a garage band with hopes of winning top prize at the school's music festival. But when creative differences break up the band, CJ must find a way to reunite the team in time for their big performance.

The gang each sets out to conquer their fears, but when CJ is faced with talking to her 8th grade crush, she needs the help of Fenwick & Crispo to cross this item off the list.

Hoping to insert a little magic into their middle school routine, CJ, Fen and Crispo set out to grant the wishes of some people in their lives.

A sleepover fund-raiser is held at school, and CJ and her pals want to stay awake for the event, but it's no easy task.

CJ longs for a pet, but her mom is unsure she's ready, so she makes CJ look after a flour baby to prove she's responsible.

CJ works with Fen and Crispo to find out their "special thing".

The group decides to enter the science fair, but CJ cannot figure out what she wants to do and starts losing her spirit; however, Ronbie raises her spirits back up with a pep talk. Meanwhile, Fenwick builds a robot that is beaten by Mindy's better robot. Crispo tries multiple things to impress one of the judges, but repeatedly fails. Eventually, CJ figures out that she can enter her list of 100 things to do before high school because of the science of whether or not things on the list prepare someone for high school and Fenwick builds a robot that highly surpasses Mindy's, but it goes haywire and wrecks everyone's science fair projects, except Crispo's, whose science fair project ended up being himself because of what his body can do.

CJ, Fen and Crispo try to find their own unique ways of creating lasting memories of their time at Pootatuck.

After Ronbie's girlfriend dumps him, CJ and the boys decide to take the initiative and get their hearts broken.