All Grown Up!

Lil doesn't want to act like twins anymore, she would rather do things on her own without Phil. Soon after, Dil recruits himself as Phil's new twin. However, Lil's new attitude is threatening the family's trip to the Twins Canyon theme park, where twins get in for half-off, if they dress alike. Meanwhile, Chuckie refuses to participate in the mandatory President's physical education exam.

A talent scout feels that Susie has what it takes to be a singer. Her parents, however, object to her concert because they are worried that it will affect her grades. She then decides to fund the venture herself, by asking her older sister for the money.

Kimi befriends ""Z"", and punk kid, and starts to act differently, and even dies her hair pink. Meanwhile, Angelica goes on an online chatline to find advice for herself. Tommy and Chuckie follow Kimi and ""Z"" into an alley way, and have a feeling that they are going to steal something.

The kids take an aptitude test to get a clue as to what they want to be when they grow up, but they are not happy at all about the results.

An older girl, Francine, picks on Tommy. Angelica is loving every minute of it! Does Francine like Tommy, or is she just a pest?

Kimi becomes obsessed with her Japanese heritage when she and the gang have to search their family trees as a school project.

On a trip to a mountain resort, Tommy develops his first crush on a girl named Olivia, another guest at the lodge. Chuckie becomes a third wheel, and feels alienated when Tommy prefers spending time with Olivia instead of helping him overcome his fear of heights. Tommy has his very first kiss with Olivia. Meanwhile Angelica tries to impress a guy who works as a hiking leader at the resort.

The whole school has caught Yu-Gotta-Go fever, a role playing card game, except Chuckie. When he finally starts playing, it becomes an obsession, and he's hired by Angelica to do her chores in exchange for more cards. He becomes one of the school's elite players, but in the pursuit of an elusive card, he nearly parts with the valuable stamp collection that Chas has passed down to him. It's up to his friends to keep him from getting in over his head.

When Susie gets chosen to sing at a big parade in New York City, the tweenage Rugrats hit the road with their moms on a cross country trip! Will Betty's clunky old motor home be able to make it to NYC and see all the stops along the way (like the world's biggest ball of yarn)? Will Tommy and his pals go crazy from lack of video games and TV? Will Chuckie finally get kissed?

Tommy attends a Hebrew school to prepare for his bar mitzvah. While there, he meets Rachel, and falls deeply in love with her. After a while he lies and says that his father, Stu is a rabbi but at the Hebrew School Picnic Rachel finds out and they find out they are both working on the same house.

As Phil and Lil's birthday nears, the twins realize that they are more different from each other than they think. Phil is getting to like girls, and Lil is wearing a pink training bra. After a shocking incident, they decide to have separate parties for the boys and the girls as they try to out-prank each other.

Tired of being considered a "goody goody" by the popular kids, Susie tries desperately to prove that she can be a bad girl.

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.

While the gang try on their Halloween costumes in the Finster's garage, they find TP+KF carved on the wall. Chuckie believes that Tommy has a crush on Kimi. The argument between Tommy and Chuckie escalates to where their friendship falls apart. So the rest of the gang tries to bring the two back together, but backfires. The two eventually make up when Chuckie saves Tommy from the middle school goons who were chasing him.