Junior wants the Li'l Trooper Missile so badly that he earns money to buy one himself and takes revenge on the manufacturer when it does not work.
Principal Peabody forces the kids of Toe Valley Elementary School to sell Grammy Bombs for a chance to get a new swimming pool for the school and a free day off.
Escaped prisoners take Junior and his pet rat hostage.
Junior is excited to go on a trip to Altanic City, but finds out he cannot go as he plans to have a party, but his plan is ruined after he is stuck with a babysitter as Junior tries to find a way to get rid of her to have his party.
Junior fights back when media watchdog groups declare that his favorite TV show is inappropriate for children.
In order to evade trouble, Junior is sent on a field trip to Faragua where its dictator General Pierre Habib-Johnson is visiting Toe Valley. While in Faragua, Junior gets the child laborers in a revolt of the government by posing as General Pierre Habib-Johnson.
City council wants to turn an amusement park into a toxic-waste dump.
Junior is being stalked by a creepy clown.
Junior is trapped in the bathroom after locking himself in after not wanting to go to an annual barbecue since Big Ben is there since they always get back at each other.
Peabody plans to get Junior back as he threatens to blackmail Junior and get his friends into trouble and make them suffer. As Junior agrees to obey Peabody as Junior is accused of putting glue on Peabody's chair as he claims he didn't do it, Peabody makes every student stay in the auditorium and watch a boring movie.
Junior goes to a high-tech summer camp.
Junior runs for mayor after his comments on why kids have it harder than adults become popular.
Principal Peabody steals Junior and Cindy's idea for an invention that helps kids clean their rooms.
Junior, Cyndi, Murph, Betsy, Ross, and Spencer get scammed by a Hollywood producer hired by Big Ben Healy to dupe the parents into thinking their child will be the next big movie star.
Junior helps Cyndi become a problem child, but the transformation turns her into a bully. Meanwhile, Principal Peabody uses hypnotism to brainwash people and has his sights set on Junior.
Junior and Little Bob Healy go on a father/son camping trip, but it soon becomes a grandfather/father/son trip after Big Bob Healy runs away to escape people who want a refund from him for selling them toxic land.
Toe Valley competes in the Weird Olympics, but Big Bob Healy and Principal Peabody are forced by a Mafia don to fix the games so Toe Valley loses.
Junior runs away and joins the circus when he is tired of Little Ben's rules.
Junior meets a kid even more destructive than him: his younger cousin.
Junior tries to get in good with a group of sixth grade boys.
While on a trip to Fort Healy, Junior and Cyndi discover an old storeroom that holds evidence that one of Junior's ancestors cheated the Native Americans out of their land.
Junior finds himself in prison after police mistake him for an escaped convict.
Ms. Hill, Junior's second grade teacher, gets fired by Mr. Peabody and gets a job at a construction site.
Big Bob Healy and a music producer trick Junior and the kids into starting their own band.
On the day of a big ice-skating competition, Cyndi misses out when someone locks her in a closet and Junior plays detective to find the culprit.
The kids put on a telethon to save the school when Peabody to embezzle the school's funds.
