It's a sad day as Clarissa complete her last assignment for the Dispatch - an article dedicated to the future.. where will everyone be in 20 years?
When Clarissa decides to protest against animal testing at Woolcott Industries, she and Sam end up getting arrested! But afterward they can't decide whose parents they should call from the police station.
Clarissa discovers that real science can be really weird. After interviewing a woman who supposedly spotted a UFO, Clarissa decides to get to the bottom of the UFO phenomena herself.
Ferguson orders a pair of new mind control glasses and decides to try them out on the family. However, Clarissa decides to fight back too as she has the same mind control glasses.
Clarissa is given her own advice column in the school paper. She soon finds out that giving people good advice isn't as easy as she thought.
After Clarissa is given a class assignment to invent and market an environmentally safe product, she teams up with her mom to market Bouncy Balls- yummy health treats that bounce when they're dropped on the floor. The business doesn't work out so well when Clarissa feels left out of marketing process. Meanwhile, both Ferguson and Marshall have their tonsils removed.
Clarissa has her work cut out for her, when Piper, the daughter of one of her mom's old school friends comes to stay and is far from friendly.
Clarissa learns a few lessons about responsibility when she becomes the editor in chief for her school newspaper.