Grandpa and the Rugrats take a trip to a store that specializes in tropical pets, as Grandpa was interested in buying a talking bird for Lulu. After Grandpa buys those little toys out of the gum machine for the Rugrats, Lil gets a toy ring, which was called "the Ring Of The Sunbeams", a ring that's so special, that Angelica wants it all for herself.
Now that Spike and Fifi have a family of their own (in Bow Wow Wedding Vows), there's one problem -- what should the Finsters do with all those puppies? Solution -- give them away to good homes, of course. With the Finsters already having a dog of their own, they plan on giving ALL their puppies away. But one of them, Puppy, is too scared to leave, while the brave Spiffy is actually happy to have found a new home. Evidently, Puppy ended up being a permanent part of the Finster's household, while Spiffy will be living with his dad -- at Tommy & Dil's house. But watch how all this plays out, especially as Angelica wanted a dog of her own.
At the park, Angelica wants to play with a couple of 4-year-old girls. However, those girls dislike anyone who's 3 years old, like Angelica. So, she convinces the girls that she's 4 years old by trading Phil in exchange for their jelly-based toy. In return, Angelica promised that she'll be nice to the Rugrats. However, Phil wants much more than that. Meanwhile, Grandpa tries to teach Spiffy, one of Spike & Fifi's new puppies, n
A the Java Lava, Angelica brings over her new "Hip Teen Cynthia" doll, which talks. However, when Angelica wasn't looking, the Rugrats have broken the doll. Shortly after Stu took it home to fix it, Cindy, a high school intern, came over to work at the Java Lava. When they noticed that Cindy looks and talks like Cynthia, Angelica and the Rugrats thought that Cynthia came to life. Meanwhile, Cindy causes trouble for the Java Lava by not working at all -- she considers nail polish, magazines, and phone conversations to be more important than actually working.
Angelica takes her "life-like" doll, which happens to look like Dil, to pre-school. But after one of her classmates brought a similar type of doll to show-and-tell, Angelica delayed her presentation a day, so she could switch her doll with the real thing -- Dil. But with Dil at school and her doll at Tommy's house, the Rugrats were led to believe that Dil turned into a doll because he was bad.
The gang visits Grandpa & Lulu's retirement home, where they danced and played golf. Later, at Tommy's house, Angelica "retires" the Rugrats, just so she could watch "Cynthia P.I." in peace. It's especially important, as that episode included a sweepstakes draw for a truckload of Cynthia merchandise. But she soon learns that being in a retirement home isn't strictly quiet sleeping.
When Chazz's library book, "The History Of Nasal Inhalers", was due, he took the Rugrats to the library to return it. While there, Chazz decided to get library cards for Chuckie and Kimi, saying that they're "the window to the world". But, will the Rugrats obey the librarian's rules to keep quiet, not eat, and to put the books back? Meanwhile, Chazz's library privileges are revoked when the strict librarian noticed a microscopic tear on a book's cover, forcing him to make a deal.
The Carmichaels get a visit from the "Great Aunt T", who came over to celebrate Kwanzaa with the Carmichaels. The holiday, which the Carmichaels normally don't celebrate, celebrates the honor and greatness of the African people. However, Susie feels that she isn't as great as her brothers and sisters, all of them examples of greatness in the Carmichael family. With a little help from the Great Aunt T. and the Rugrats, she learns that everyone is great in their own way, making "Kwonzo" a joyous holiday. We also go back in time, when Aunt T met Dr. Martin Luther King, Jr. in the most unusual place -- at the side of the road with car trouble, as well as the time Aunt T funded Lucy's tuition money for Harvard Medical School.
To help expand their minds, Chazz and Kira send their kids to the Happy Clown Daycare Center, endorsed by Dr. Lipschitz. Angelica informs Chuckie & Kimi that daycare can be dangerous, as it's where the "scary kids" go to play. When they got there, Kimi ended up having a ball, while Chuckie would rather hide in balls.
Rugrats play ""Follow The Leader"", with Dil being the leader. When Dil sucks his thumb (mimicking Stu when he sucks his own thumb after hitting his hammer on it), the Rugrats do the same, but fail to stop. When the adults noticed this, they panicked after reading in a Lipschitz book that thumb-sucking leads to poor academic skills and bucked teeth. Angelica uses this advice to get Chuckie to believe that they'll turn into ducks, when they get ""duck
Angelica graduates from the ""Mind My Manners Charm School"", where she is taught good manners. She puts her knowledge of manners to work when an important guest, an executive for Charlotte's company, is invited to Drew & Charlotte's for dinner, leading to Angelica teaching the Rugrats some manners.
The Rugrats are at a craft & antique fair, where Didi is selling her ""Bird Homes"" -- artistic bird houses that she made. However, she hadn't made any money, or as so much as a glance from someone walking by, due to her competition. Meanwhile, Grandpa sits down on an antique rocker to tell a story to the Rugrats; naturally, he falls asleep. The rocker is up for auction, but with Grandpa still in the rocker, the Rugrats though that it was Grandpa who's up for auction, so they find a way to buy him back.
Kevin McNulty, one of Grandpa's old friends (and of course, related to Timmy and the McNulty boys), goes through the secret initiation in order to get into the Loyal Order of Wombats. After seeing this, the Rugrats have Dil go through something similar, so he could become one of the ""Big Babies"". In turn, their fathers mimic the Rugrats, on a bet that they could do everything the Rugrats do.
The Cirque du Dummi Bear show is coming to town, and Angelica really wants to go. There's only one problem -- she's coming down with a cold. The good news (to her, of course) is that Charlotte and Drew doesn't know about her cold yet, so she makes a scheme to hide the cold from them and make them believe that one of the other Rugrats have it.
The grown-ups prepare for a block party. After Betty warned the Rugrats that Dil will become a watermelon if he eats too much of it, they thought that it happened when Didi took Dil inside to clean him up and was replaced at that spot with a watermelon, while they saw Chazz making balloon animals. The worst part is that watermelon is going to be part of a watermelon-eating contest.
Angelica recently received a Cynthia talk show outfit, while Kimi got one of those toys that you push beads along pipes. While the other Rugrats were getting ready to play "talk show", Chuckie wanted to play with the other toy, but broke it after tripping on it. Afraid that he'll make Kimi sad, he hid the broken pieces away. Angelica, however, saw the broken pieces, and organized a talk show on the Rugrats' most intimate secrets, just to find out who broke it, as well as entertain herself with a recording of an angry, upset Kimi on tape.
Phil watches "Adventure Squad", a super-hero show that becomes so intriguing, that he tries to make all the Rugrats' imaginary adventures involve the "Adventure Squad". While it seemed great at first, the rules of the game, along with Phil's reluctance to play anything else, begins to take a toll on the other Rugrats.
While repairing the sprinklers, Stu accidentally breaks the water main, forcing Didi, Betty, Colleen McNulty and Jonathan (for Charlotte, of course) to go to the laundromat to do their laundry. It was a good place for the Rugrats to watch the front-load washers like they're watching TV (a la Zippy The Pinhead), but when the Rugrats encounter the McNulty boys, trouble ensues. In a tribute to West Side Story, they fight over their ""turf"" in this musical episode, while Angelica looks for her missing Cynthia, and Jonathan complains about doing Charlotte's laundry, mentioning that working at a f
Stu has bought a new pair of shoes. But when they clash with his suit, squeak when he walks, and hurt his feet, he rants and raves, complaining that they are "the worst shoes ever worn by a human". Overhearing this, the Rugrats figure out ways to save Reptar, Stu, and themselves from this pair of "bad shoes".
Angelica has gotten a new Cynthia watch, which she uses to trick the Rugrats into believing that they must do whatever the watch says. Basically, the watch "tells" the Rugrats to become Angelica's slaves. Then, on the way to get a snack, Angelica's watch slips off her wrist. Kimi finds it, but hides it away, so that Angelica wouldn't order the Rugrats around anymore. However, they think that time stops as long as the watch stays lost, meaning that Angelica stays around forever and ever. Meanwhile, Stu
Chuckie accidentally had his toy airplane jammed inside the toilet, which motivated Chazz into getting a new one to replace it. While the folks are shopping at a home improvement store, the Rugrats think that an entire army of toilets are out after them, to seek revenge for what Chuckie did to one of them.
When Angelica decides to play "business luncheon", the Rugrats wanted to play too. However, Angelica told the Rugrats that they can't play unless they're able to wear grown-up clothes, tell jokes and not wear diapers -- her idea of growing up. Susie tries to make the Rugrats grow up, so they can join Angelica.
Angelica & Susie compete in a talent show, with Angelica having the usual unfair advantage, thanks to a little spying, trickery, and Charlotte's usual connections. At stake -- a trip to Cynthialand. Also in the show -- Grandpa & Lulu's dance act, provided that Grandpa's trick back doesn't get in the way.
To help expand their minds, Chazz and Kira send their kids to the Happy Clown Daycare Center, endorsed by Dr. Lipschitz. Angelica informs Chuckie & Kimi that daycare can be dangerous, as it's where the "scary kids" go to play. When they got there, Kimi ended up having a ball, while Chuckie would rather hide in balls.
At an amusement park, Angelica, now the only only-child in the series, feels left out when she had no brother or sister to join her in a novelty photograph. After Drew mentioned to her that they aren't ready to have any more kids, she starts looking for someone who would make a good brother or sister for her.
This episode picks up where Rugrats In Paris has left off -- with the entire gang now back in the good old US of A, with Chazz a newly-married man, and, most importantly, Chuckie gaining a new mother and sister that he likes. But if you think that the Watanabe-Finsters are going to be in a total state of bliss from now on, think again -- as long as there's Angelica, there cannot be total bliss. And who else but Angelica would put a damper on Chuckie's happiness? While Kira studies for a fairy tale play (which involves Cinderella), Angelica tries to trick Chuckie into thinking that he'll be living the same life as Cinderella -- virtually being a slave to Angelica and Kimi, while everyone else gets ready for a party that will celebrate the newlywed couple's adoption of each other's child, a couple of weeks after their marriage.
The Rugrats try to stop Fall by stopping the parade, and they do, with a little help of their former friend, Reptar. And in the audience, someone from Euro Reprar Land is watching, in hopes that it would become an important part of the new theme park. Meanwhile, Grandpa recovers nicely, but ends up coming down with a new disease -- the "Love Bug" -- after a nurse named Lulu brought him back to health. In a bizarre twist, this wasn't the first time they met, yet it was the first time they knew each other.