Six brave fourth-graders at Third Street School make it their mission to protect the other kids on the playground. Despite the rule of King Bob and his minions, who enforce his unwritten laws, T.J, Ashley, Vince, Gus, Gretchen and Mikey seek a rational balance between conformity and individuality.
Mikey begins to fear for his future when Gretchen's hand-held PC Galileo makes a gross miscalculation about his future height.
Fed up with Vince's ego, the kids bet Vince that he can't go one whole day without beating someone in a sport.
After a visit to a beauty museum with Gretchen, Spinelli's parents seem to be a little "unsatisfied" with their daughter.
Spinelli gets a crush on a fifth grader and has to get over it to save her reputation.
Gus becomes jealous of Yope, a Norwegian transfer student.
The Ashleys get back at Spinelli by entering her into the Kiddie Cosmetics Little Miss Blush Beauty Pageant. But her friends talk Spinelli into trying to beat the Ashleys in the pageant.
The school gets a new technology system installed called the SAL 3000 which controls everything.
People start paying Gretchen for doing their homework so she can buy herself a new bike
Menlo teaches Mikey to be more "organized", and Mikey starts changing
In his hatred of Valentine's Day, T.J. sends a "funny" valentine to every single girl on the playground to show them how stupid Valentine's Day is, but his plan soon backfires when the girls mistake them for "real" valentine cards.
Randal recruits the Tylers, the Ashleys' little brothers, to help him snitch.
The bad kids from The Girl was Trouble trick Gus into shoplifting candy from Kelso's.
Gus has to go to the Yard of No Return when he kicks a good kickball over the fence.
Menlo and Randall team up to manipulate the entire playground.
Principal Prickly and Miss Finster plot to turn T.J. over to their own side by making him principal for a day.
Miss Finster hurts her leg and can't keep up with the kids during recess.
The kids warn Gus not to break the code by telling Miss Finster who started a food fight.
Tired of T.J. and his friends getting all the glory from King Bob, Lawson decides to get a gang of his own together.
The main kids try to get all the other kids to help rescue T.J. when Miss Finster punishes him by making him have no recess.
T.J. finds a $100 bill and along with the gang try to find out who lost it.
Randall becomes popular when he uses a joke book to make himself a standup comedian.
Randall blackmails King Bob into giving him the throne.
The kids take in a really ratty stray cat that they find near the dumpster, naming it Stuart.
A hypnotist performing for the kids inadvertently hypnotizes Principal Prickly into thinking he's six years old.