Ferguson embarrasses Clarissa at school and so she is out to exact revenge using a straight jacket and balloons. Sam's father wants him get into the football team and he is determined to not be in it, with Clarissa's help.
Ferguson and Clarissa have been fighting for control of the TV when Clarissa's mother decreed no TV for a week. The problem then becomes about how to fill in the time without getting on each other's nerves.
Clarissa decides to produce her own news network CDNN. Her family figures prominently in her news reports. Clarissa's biggest scoop turns out to be her mother's mid-life crisis.
Clarissa finds her Aunt Mafada's overly affectionate mannerisms annoying. She decides to haunt the house to encourage her to leave early. It backfires when it turns out that Aunt Mafada is interested in the supernatural.
Clarissa is convinced that her parents are trying to have another baby. To help persuade them to not have a new baby, she enlists the aid of Ferguson. Sam needs to come up with a new science investigation and Clarissa gives him an idea.
Clarissa decides to rebel by wearing an outrageous outfit for her class picture, which Janet is horrified over.
Clarissa wants to buy a car but needs to get the money first. She then sets out to raise the $1500 needed. When Clarissa has no success getting the money out of her parents, she decides to sell Christmas cards, in the middle of the year.
Ferguson is being nice to Clarissa but she is suspicious of his motives. When she notices her Walkman has disappeared she manages to get to the bottom of it. Marshall receives a chain letter and Janet is horrified when he destroys it.
Ferguson does an IQ test and, when he finds out that he is in the top 5% of the country, he becomes even more obnoxious, convinced that he is a genius. To make money, Ferguson decides to go on a TV game show called 'Brain Drain'.
Clarissa tries to help celebrate her parents' anniversary by making a cake, but Janet and Marshall stop talking to each other over what to stro on the night.
Clarissa doesn't want to go to Ancient Greece pageant day at school so she fakes being sick. Her parents don't believe her until she really does become sick. Then the pageant is revamped and suddenly Clarissa wants to go.
Marshall is invited to speak at Clarissa's school's career night, which she finds embarrassing. Clarissa tries to convince him not to go, unsuccessfully. Marshall decides to become 'cool' to fit in.
Clarissa wants a job at the Baxter beach carnival but her parent's think she is too young and say no. She then sets out to get them to change their mind. They finally say yes, but the job doesn't quite work out how she expected.
Clarissa gets a major crush on local weatherman Flip Fontana. Her rational head is horrified by the foolish state of her heart. Despite her best efforts, she can't stop daydreaming about him and trying to concoct ways to meet him.
With a Mazda Miata grand prize as incentive, Clarissa enters a magazine contest, "My Brother - What a Guy" and grossly exaggerates Ferguson's qualities.
Sam stays with the Darlings while his father is away and becomes the perfect son. Sam and Clarissa are working on a school project, but he spends so much time being polite to her parents, that he never has time for Clarissa, and she feels left out.
Ferguson runs for school President and turns the Darling household into his campaign headquarters. Clarissa and Sam plot to suppress Ferguson's ego.
Clarissa wants to go to a Nirvana concert.
Clarissa's overbearing guidance counselor encourages her to participate in normal teenage girl activities. After giving the recommended activities a try, Clarissa decides that being normal is overrated.
Clarissa assists Sam in his pursuit of a girlfriend. Ferguson interprets the misplacement of his birth certificate as a sign that he's adopted.
Clarissa finds herself attracted to the school bully. Marshall goes for a new look after being scouted by lady from a modeling agency.
Clarissa attempts to watch television continuously for 24 full hours for a science project, but she finds the task more difficult than she imagined.
Clarissa is the understudy for the lead in the school play but is suddenly pressed into action.
Ferguson's rich new friend uses him to get to Clarissa.
Clarissa's parents debate over their plans for the future.
Clarissa's plans for a slumber party are ruined when overbearing Aunt Mafalda visits.
Sam's mom comes to town to play in a roller derby match. Although she is the "Most Valuable Slayer," she announces that she wants to quit the derby and take Sam back to Seattle to live with her for good.
Marshall becomes jealous when Janet's ex-boyfriend, a successful writer, pays the Darlings a visit for dinner.
Clarissa turns to her computer to help her finish an assignment for which she must write a poem. Not only does the computer "write" a strange but well-loved poem, but also Clarissa is chosen to represent her school at a banquet for young poets.
After being left alone for the night, Clarissa and Ferguson take turns scaring one another. Over the course of the evening, the Darling war continues escalate until an unexpected guest frightens them both.
Clarissa is broke and decides to get a job. She declines to use Ferguson's job placement business, but lets the librarian help her with her resume and job search. Clarissa gets multiple job offers, all of which she accepts.
Ferguson has decided to torture Clarissa by giving her "The Silent Treatment." Clarissa retaliates by devising a software program designed to gross him out when he steps into the bathroom.
Janet recruits the whole family to participate in Volunteer Day at the Children's Museum. Clarissa desperately wants to get out of this assignment and lucks out when the museum closes because of boiler problems.
Ferguson has fallen in love and is asking everyone for advice, including Clarissa, who wants to give him the worst advice possible. Yet every bad idea she gives him works in his favor and all the girls go crazy for him.
During a midlife crisis, Marshall decides to move the family to a small South Pacific island. Clarissa does her best to change his mind before the house sells.
Ferguson tries out for the football team in an effort to win Marshall's bet with a neighbor. Clarissa uses exercise to get Ferguson into shape.
Clarissa fears a future life of crime after accidentally stealing some lingerie from a store. Returning the merchandise proves to be harder than taking it.
Sam scores two tickets to a Pearl Jam concert. Clarissa wants to attend the concert but also feels obligated to DJ her grandparents' anniversary party.
Sam sets up himself and Clarissa on a double blind date. Clarissa is besieged by visions of a blind date from hell. But after Sam describes how cool her date is, she begins to think that she might be the geek.
Clarissa and Ferguson must run the household with their parents both ill.
Clarissa and her friend become the victims of a mail scam.
Clarissa becomes afraid of commitment in her relationship with her boyfriend.
Plans for a family vacation to the Grand Canyon go awry.
Clarissa's bicycle is stolen.
Clarissa's boyfriend develops an ego after starring in Ferguson's cable-access TV show.
A new girl in school copies Clarissa's style and then steals her idea for a newspaper article.
Clarissa develops stage fright when asked to play a flute solo at the school music recital.
Clarissa and Sam go out on a date but decide they're better off as friends.
Trouble ensues when Sam's messy mother comes to stay with the Darlings.
Clarissa turns to a distant relative's journal for tips to help her win the school talent show.
Clarissa babysits for a troublemaking girl with a crush on Ferguson.
Clarissa and Ferguson face difficulty when their mother starts teaching at their high school.
Since Clarissa's parents have forbidden her from buying a 'car,' she comes up with a scheme to buy Olivia's brother's motorcycle.
To complete a homework assignment, Clarissa attempts to reinvent her mother.
After becoming editor-in-chief of the school newspaper, Clarissa learns that power is accompanied by responsibility.
Piper, daughter of Janet's college roommate, visits for a week. Clarissa works to overcome Piper's aloofness.
During a party, Clarissa falls for a drummer named Paulie while pretending to be a 'hypercool' dressed character called Jade. Clarissa initially assumes the Jade alter-ego when meeting Paulie but eventually reveals her true self.
Problems arise after Clarissa and Sam are respectively assigned internships under the other's father.
Clarissa composes an essay for a scholarship. Marshall considers a lucrative job offer from a large corporate firm.
Janet and Clarissa invent a delicious snack that bounces. Mother and daughter then collaborate to market their creation as a novelty health snack called Bouncy Balls.
Ferguson reads a book on mind control then uses the included glasses to hypnotize friends and family. Clarissa counters Fergs attempts to control her mind by fighting fire with fire.
Clarissa pens a school paper advice column under the pseudonym, Alice B. Talking. Ferguson prepares for performing a stand-up comedy routine for talent night.
Clarissa is assigned to write an article about a local woman's sighting of an UFO. After interviewing the elderly lady, Clarissa decides to investigate further.
Clarissa and Sam get arrested for protesting against a local company's animal testing.
Clarissa finishes her last article for the newspaper, dedicated to the future. This arises the question: Where will they be in 20 years?
Pilot episode of the cancelled follow-up series to Nickelodeon's "Clarissa Explains it All" in which debutante Clarissa Darling contends to her life in New York City and her internship at a local newspaper.
