Tired of being considered a "goody goody" by the popular kids, Susie tries desperately to prove that she can be a bad girl. Meanwhile, Phil discovers that he has a talent for cooking.
When Tommy forgoes going to the traditional opening day ball game outing with his Grandpa, Lou takes Dil instead. This makes Tommy jealous as he and Dil compete to be Grandpa's favorite grandson during a fishing trip.
When Chuckie discovers that Kimi is upset, he comes to the conclusion that she hates how her room looks. The gang decides to help him redesign it for her while Angelica keeps Kimi busy. Dil tries giving advice, but they choose to ignore him. It is later discovered that she is homesick for Japan and her biological father. Chas and Kira have a big surprise for Kimi.
When the gang looks for Halloween costumes in the Finster's garage, they find "TP+KF" carved on the wall, leading Chuckie to think that Tommy has a crush on Kimi. Dil goes trick-or-treating the day before in order to beat the rush, but only gets money and becomes annoyed. The argument between Tommy and Chuckie escalates to where their friendship falls apart. The gang tries to bring the two back together. Chas has a new security system to scare away anyone who might want to T.P (“toilet paper”) his house.
When the comic book starring Chuckie's favorite superhero (Armadillo Dave) gets cancelled, he is too depressed to help Tommy with his science fair project. Tommy has to buy a rat for his project, but the last rat available is a mean one that scares everybody. Tommy made a simple one lane track for his rat, but needs Chuckie so he can get a good grade on it since Chuckie has done it before. The gang tries to find Chuckie a new hero to worship.
Angelica's teacher is having a baby so she brings in a hot handsome sub teacher that Angelica falls in love with. She tries to date him by failing her assignments. Meanwhile, Tommy, Phil, and Chuckie are part of the tennis club run by Pangborn. Chuckie is trying to avoid showering at the boys' locker room, but when he takes the chance, he realizes he has nothing to worry about.
Tommy's girlfriend Rachel is moving away, and he's cool with it. However, his friends think otherwise, believing him to be in denial. Tommy tries going about his life as normal, but everyone keeps trying to show him compassion, annoying him greatly. Tommy is advised by Dil to go along with the plan so his friends will leave him alone.
Kimi leads a petition drive to ban cell phones in school. Angelica hoodwinks Chuckie into helping her keep cell phones in school in her petition drive. Kimi gets busted for wanting a cell phone for Christmas. Kira and Chas celebrate their 10th wedding anniversary.
When the gang's parents feel that they are spending too much time watching TV they ban it from the house. Tommy's former friends, Chuckie, Phil, and Lil, and Kimi are bullying/getting Tommy. So in order to get their televisions back, they do something dare-devilish. They make a tree house with a zip-line in the backyard, to scare their parents into giving them their TV back.
With Stu and Didi away at an Invention Convention, Dil wants to host a viewing party for a "real" alien autopsy video. But when both Grandpa Lou and Grandpa Boris show up to babysit the kids, they start to have a feud. This gets even more difficult when Phil, Lil, and Chuckie show up and Dil invites 10 other kids come see it.
This page uses content from the English Wikipedia. The article or pieces of the original article was at List of All Grown Up! episodes. The list of authors can be seen in the page history. As with Nickipedia, the text of Wikipedia is available under the GNU Free Documentation License.