A look at the lives of two best friends and neighbors since birth, Tucker and Rebecca, and their respective adventures as they travel through the world of eighth grade.
Things don't go quite as planned for Tucker and Becca on the first day of school. Now that they're finally in eighth grade, Becca is looking forward to writing for the school paper and Tucker wants to be the school announcer. However, Tucker soon learns that he's up against Jack, a smooth-talking new kid who seems determined to humiliate him. Meanwhile, Becca and her best friend Christine are disappointed to find that they aren't in the same homeroom.
Christine decides that she wants to take wrestling in gym class with the boys and Becca helps out by starting a petition to let girls enroll. But when Christine shows up, Tucker makes fun of her and, as punishment, Coach Petrowsky assigns him to the girls' rhythmic dance class. Everything comes to a head when Tucker and Becca convince a reluctant Miles and Christine to compete in a boys against girls wrestling match.
When both Tucker's and Becca's parents go away for the weekend, they decide the time is right to throw a party at Tucker's house. But Becca's sister, Ellen is planning her own party at their house and when Becca hears that the extremely cute Zach Anderson is going to be there, she forgets her plans with Tucker and their friends and begs Ellen to include her. Of course things don't go as smoothly as they all hope.
Becca wants to invite Rob Wetzel to a school dance, but she doesn't know if he likes her. So Kerry suggests that they create a ""Cool Book"" and pass it around so that others will write down what they think of everyone in school and then they'll know who's cool or not cool. Becca thinks it's a good idea at first but soon realizes that there are some things you'd rather not know. Meanwhile, Tucker agonizes over why no one has written anything about him in the cool book so he does it himself.
Becca is torn when she realizes she'll have to choose between two very important activites when she learns that rehearsal for her annual ballet recital conflict with the tryouts for the pep squad. Should she follow her heart or pursue a surefire ticket to what Kerry assures her is guaranteed popularity? Meanwhile Tucker and Miles try to win the yearbook's annual candid photo contest. Their subject: the pep squad.
Having won the speech contest for the past two years, Becca is determined to hold on to her title this year. After carefully choosing rock climbing as her topic, she throws herself into her research only to find that her academic rival Vega may also have the same idea. Meanwhile, Tucker sees an opportunity to take over the school DJ position, a job currently occupied by his arch-nemesis Jack.
Tucker can't believe it when his dad surprises him with a pair of tickets to a concert that's been sold out for weeks. But before he has a chance to invite Becca, Tucker finds out that Kerry, the girl he has a crush on, would love to go. He invites Kerry instead, figuring that Becca will be none the wiser.
A bully is terrorizing Tucker's younger brother Horace, so Tucker steps in to defend him, only to discover the bully is Jack's younger cousin. Jack then challenges Tucker and Horace to a fight against Garth and him. Meanwhile, Becca and Christine befriend a stray dog that has been disrupting classes and try to save the mutt from the dogcatcher.
Becca is thrilled when her old best friend Maxine has returned after living in New York since third grade. But when Maxine is now Max, and Becca hardly recognizes this seemingly sophisticated person who finds Parkview really boring. Christine can't stand Max and Becca finds herself caught in the middle. Meanwhile, Tucker decides to tell Kerry how he feels about her and organizes a cosmic bowling party in the hopes of getting a moment alone with her.
Tucker is all set to be an extra in a horror movie, until his mom reminds him that he has to spend that day looking after Horace. So Tucker tells Becca he'll take over their joint Health assignment, which involves looking after a lifelike doll that has to be cared for like a real baby, if she'll look after Horace on Saturday. His parenting skills turn out to be disastrous.
When Max makes fun of Becca and Christine for not having social lives, Becca gets up the nerve to call a guy she knew at camp, and invites him to a movie that weekend along with a friend for Christine. Becca is both thrilled and terrified that she might get her first real kiss. Unable to stifle his curiosity and jealousy, Tucker convinces Miles that they should spy on the foursome, only to recognize Becca's date as a jerk named Scott.
Sibling rivalry is running rampant in the Fisher household. Becca and Ellen are running themselves ragged trying to outdo each other since the prize for the most helpful daughter is a trip to Malta to visit their aunt. Becca rallies the boys to help her find dirt on Ellen, while Ellen concocts her own plan. But when Becca lets one lie slip, catastrophe develops, throwing her into a spiral of guilt.
Tucker, Becca, Miles, Christine, and Horace go camping, only to realize how much they enjoy the comforts of home.
After learning that Becca's dad once streaked while at school, Tucker decides to create some first-class mischief of his own. Determined to become one of the school's legendary pranksters, he enlists Miles to write a computer program to infiltrate the school's system and heckle the teachers. Becca, who has finally been given the chance to do a try-out article for the school newspaper, smells a story and tries to persuade the boys to give her the scoop. The stakes rise after Miles is caught and risks expulsion.
Tucker and Miles decide to try out for the soccer team and Tucker surprises everyone, even himself, with his natural talent as a goalie. Much to Jack's dismay, Tucker leads the team to victory in their first game. But when Tucker gets benched for grandstanding, he gets kicked off the team. Meanwhile, Becca starts writing for the school paper and, in exchange for having her poetry published, is assigned to the reviled sports column.
With Miles spending so much time online talking to virtual friends, Tucker feels left out. He recruits Becca to aid him in his plan to concoct a secret admirer for Miles in order to draw him back to the real world. Becca though is supposed to be helping Christine buy a new dress for an important family function and because Christine can't keep secrets, keeps her out of the plan. Miles, however, becomes smitten with his secret admirer and wants to meet her. Unfortunately, all Tucker can do is to confess and Becca must tell Christine why she keeps blowing her off. Unbeknownst to Becca and Tucker, Christine and Miles team up for a scheme of their own.
Being birthday buddies, Becca and Tucker have a tradition of exchanging gifts the night before. Becca always gets a great present for Tucker, and every year, Tucker struggles to buy Becca a present that only he seems to appreciate. This year, he goes to great lengths to find something she'll love, even enlisting the help of Becca's sister Ellen.
Miles concocts an elaborate scheme to show Tucker that he too can lead one of their escapades. He persuades Coach Petrowsky to take them on an orienteering field trip to a park not far from the Planet of the Apes film festival. Intending to sneak away to the movies, the duo ditch the nature walk. In the meantime, Becca and Christine lose their compass and wander aimlessly through the woods, wondering if they'll ever reach civilization again.
When Becca discovers the secret location of the ninth graders' annual bash, she spills the top secret information to Kerry, who's incapable of keeping it mum. To salvage her reputation, Becca plans a new bash at her vacationing uncle's empty house. But Ellen also decides to take advantage of the empty house and plans a date with her boyfriend for the same afternoon. Tucker, who's been grounded, sneaks out to warn Becca that her sister is on the way.
Rumors of love begin to fly when Tucker and Becca plan to go to the school dance together. Encouraged by Max, Becca squashes the rumors by avoiding Tucker. When he seeks her help, she volunteers Christine to teach baseball to an unenthusiastic Horace. But this backfires and she becomes alarmed when she notices how much time Tucker and Christine are spending together. Her jealousy leads to ridiculous conclusions.
Becca's former crush Scott Stuckey returns to kick Tucker and Miles out of the skate park. But Tucker takes the bait and challenges the bully to a skate-off. Becca enlists the help of her current crush Gooch, a skateboarding expert, but has to think fast when she accidentally causes him to sprain his ankle.
When a hotshot journalist comes to Parkview to do a story on 'today's student', Becca uses the opportunity to get a column in the newspaper that he works for, while Tucker, Miles and their friends conspire to make the students seem more interesting.
Every year, the eighth graders outsmart VP Petrowsky and sabotage the float for the Parade of all District Schools, and this year Tucker and Christine join in. When Becca wins Petrowsky's trust by volunteering to be Float Cop, the girls plot to sabotage the float. When the boys realize it's too late for them, they join forces with the girls.
It's time for the eighth grade talent show. Tucker is planning to do standup, Miles is working on a magic act, and Becca, Christine and Max are practicing their tap dance routine. Tucker invites Roland, a less popular student, to be a part of his act. Roland secretly wants to be more like Tucker and starts dressing and acting just like him, driving Tucker crazy.
Becca's parents agree to leave her home alone if she invites a few friends to keep her company. That night, when Tucker and Miles see how much fun the girls are having, they decide to have some fun of their own. The girls return home to find they're locked out of the house. They go next door to get the spare key from Tucker's and realize the boys have something in store for them over at Becca's.
Romance blossoms as Becca stages her own adaptation of Robin Hood, in which she plays Maid Marian with Tucker as Friar Tuck. The play though has been radically overhauled with Robin Hood all but written out and a romance concocted between Marion and Friar Tuck. Tucker and Becca realize that they've like liked each other but never at the same time... until now.
