A baby duck hatched in Tommy's backyard, and the first thing it sees is Chuckie. Chuckie adopts the duck, which he calls ""Herbert"". At first, caring for Herbert was exciting, but when the novelty wears out, it becomes a chore. Meanwhile, Betty and her environmental group protest at a condo site that left the baby duck's mother without a home, while Grandpa tries to win at checkers.

Spike's attempts to save Dil from immenent danger gets Spike in trouble with Stu & Didi.

Dil and Angelica steal the affections of the adults because they are beautiful and cute, so Chuckie decides to turn into a butterfly to be beautiful and cute too.

In order to get two Cynthia toys Angelica pretends that she has a twin to get double of what she wants. Everything goes well until the babies like her twin better then her so she decides to go back to being herself.

Angelica Tells Tommy that Susie's ( imaginary ) sister Yvonne disappered of giving all her toys to Susie. Tommy and Chuckie think he will dissaper, and take the toys away from Dil and Didi.

Angelica drafts the Rugrats to play her ballet troupe, so she can stage her own ballet recital to prove that she can dance. She did this because (1) she lied to Susie about taking dance lessons (Angelica was expelled from dance school after 2 classes), and (2) she did this to get back at Susie, who was chosen to be a lead at her class' presentation of Swan Lake. Angelica's biggest challenge is to get Chuckie to wear a tutu; he didn't want to, as he feels embarassed wearing one (obviously). The end result -- ""Angelica Lake"", with a pail of water for a lake, and Dil in his high chair as a tree. Meanwhile, Stu, Drew, Randy & Chazz work on Stu's roof, having trouble finding out what caused the roofing tiles to deteriorate.

Stu & Didi start a new baby book for Dil, to keep track of various firsts that will occur in Dil's early years. At first, of course, the book is blank, which led Angelica getting the babies to believe that Dil is not so smart. Trying to prove otherwise, Angelica and the Rugrats ""train"" Dil.

As a challenge to see whether the Rugrats are ""grown-up"", Angelica entices the Rugrats not to sleep during naptime, then uses various tactics to get them to fall asleep. The winner gets to play with Stu's newest invention, the ""Magical Merry Music Ball"".

When Stu goes on a vacation he tells Tommy that he is the man of the house now, and he has to watch over Didi and Dil while he's away.

Stu gets worn out taking care of Tommy and Dil so the adults send him on a spa treatment to make him feel better.

Stu goes shopping for a new car which Tommy, Chuckie, and Dil pretend its a submarine and have an undersea adventure.

Chuckie thinks that he's not normal because he can color with either his left or right hand.

Stu & Grandpa prepare a surprise birthday party for Didi. They had everything prepared except for one crucial element -- the birthday cake, which they forgot to get while rushing to get the party together. They take the Rugrats to Bob's Fully Automated Bakery to get the cake. While there, Tommy's gift to Didi, a frog, got away, prompting Dil to try and find it while the Rugrats try to rescue Dil before he becomes a cake. Meanwhile, Betty takes Didi to an English tea shop, where waiters sing songs for every occasion -- to the tune of ""Hail Britannia"".

Grandpa's old army buddy, Roy Davis, is paying a visit, but Grandpa's afraid that he'll be embarrased by his baldness and being out of shape. Meanwhile, afraid that Tommy will stay a baby forever because he's bald, according to Angelica (of course), the Rugrats try to find hair for Tommy.

Chuckie and the Rugrats go to the park to try out his new pedal-operated toy car that his father gave him. Other kids like his car so much, they become his "friends", just to get a ride. Meanwhile, Didi and Chazz compare notes on Dr. Lipschitz, with Chazz being more up-to-date on his work.

After Tommy and Chuckie decide to go their separate ways to find new friends. They each find what seem to be kindred spirits, but soon realize that it's diversity that makes the world go around.

Didi takes the babies to an art museum where they cause trouble.

At Faye's Garden Center, a plant nursery, the Rugrats think they are in a jungle. After hearing Grandpa's tall tale about Jungle Fever, the Rugrats imagine Dil turning into a Jungle Beaver, prompting them to find a cure for Dil's condition.

The Pickles plan to spend the weekend at Boris & Minka's rented cabin in the woods. The cabin lacks any modern conveniences, such as indoor plumbing. However, when they mentioned that they're going there to help protect the cabin from the elements, Tommy & Chuckie thought that they're going to the fabled ""Old Country"" to protect the cabin from the ""elephants"". Meanwhile, Chazz goes out into the woods to find his inner caveman.

Stu and Didi arrange a camping party for the Rugrats. At night, the Rugrats tell a ghost story.

After seeing Reptar steal some cereal in a Reptar Cereal commercial, Chuckie writes a letter to him complaining about the commercial, with a little help from Angelica. When Chuckie decided to retract the complaint, Angelica said that it was too late, as she already ""mailed"" the letter. Chuckie becomes even more afraid when they go to the Video Cave arcade at ""The Mall"" to meet Reptar who, according to the commercial for ""Reptar's Revenge"" (his latest direct-to-video movie), is ""mad at someone"".

So that Chazz would have room to repaint Chuckie's room, Chazz has packed all of Chuckie's stuff away in boxes, leading Chuckie to think that his dad wants him to move out and live on his own. The Rugrats help Chuckie out by finding him a ""belcher"" pad to live in. But is the garden shed an ideal bachelor pad for Chuckie? Also, Chazz finds his old Lava lamp, which takes him back to the days when he was first out on his own.

After looking at prom pictures in their parents' high school yearbooks, and the fact that Alisa is going to her own prom, the Rugrats have a prom of their own, complete with a limo and chauffeur (Dil in the Reptar Wagon), so they can decide who can be prom queen -- Angelica or Susie.

Facing a lack of jobs in the future, so says future ""stand up chameleon"" Angelica, she tells Chuckie that he needs to get a job soon. Chuckie tries his hand at being an ice cream man, a florist, a librarian and a father. Meanwhile, Stu, Chazz & Howard paint a fence.

In another religious episode, Boris tells the story of Noah's Ark to the Rugrats. Following the story, Angelica sees a weather report on TV, where some rain is forecasted for the area, inspiring Angelica to trick the Rugrats in believing that there will be another worldwide flood soon, prompting her to be the one and only boss and the Rugrats to build an ark and collect two of each animal. However, being the one and only boss will backfire on Angelica, as she is, of course, the one and only.

Grandpa relives his glory days as a wrestler by wrestling his old nemesis, Conan McNulty (Daniel Davis). Can "Pretzel-Maker" Pickles defeat Conan "The Crusher"?

Intrigued by Chazz's unusual collection of odd asthma inhalers, Chuckie starts a rock collection, with the Rugrats adding on to it. His most-prized possession in that collection is his first rock, which is moon-shaped and reminds him of his father. The Rugrats follow suit and start collecting other items. However, collecting rocks isn't as easy as you may think.

Stu, Chazz & Howard take the Rugrats to the zoo, where the employees wear animal costumes. After noticing this, the Rugrats learn that animals are people, too, as they see these ""animals"" do human stuff like eat ice cream, play with toys and sell souvenirs. When placed in a caged petting zoo, they think that they will turn into animals and remain there forever and ever. Later, when Tommy dropped his trusty screwdriver outside the pen, the Rugrats call on Dil and the real animals to help him out.

After being a flower girl (again) at a wedding, Angelica makes the moment last by forcing Chuckie and Lil marry each other in a shotgun marriage ceremony; they were ""married"" after Chuckie & Lil were the first ones to say ""I do"" when Tommy asked if anyone wants to play ""tag"". They were satisfied with the marriage, until a new baby come along -- Dil. Meanwhile, Tommy & Phil keep their ""tag"" game going with only 2 people, but doesn't work out well, now that Chuckie & Lil are married.

So that Charlotte can conduct important business in peace, and so Drew & Stu can watch tennis, they tell Angelica that they'll buy a Cynthia Dream House and a mini sports car for her if she stays quiet. She ends up taking this ""quiet"" thing very seriously by not saying a peep, not even when the Rugrats pay a visit. Eventually, the Rugrats' racket ended up making her more angrier, with no way for her to vent her anger; also, her silence ended up affecting Charlotte's business deal, rather than helping it.

After seeing Miss Carol tie shoes on her video using toy snakes, Angelica becomes an expert a shoe-tying, and proves it by tying everything in the house -- and Chuckie's eternally-untied shoes. However, Chazz thought that Chuckie tied them all by himself. Because of this, Chuckie is afraid that his dad will get angry if he learns the truth, so he tries to keep them tied, at any cost. Meanwhile, the grown-ups try to cook burgers at their cookout.