Angelica orders take out food.

Chuckie's clothes get shrunk in the wash.

Tommy dreams Chuckie becomes more like Angelica.

Chuckie becomes jealous of Tommy after hearing about his family tree.

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"".

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 & 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.

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.

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

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.

After seeing someone on TV running for mayor of their town, the Rugrats vote to see who's going to be ""mayor"" of their group -- Tommy or Phil. Meanwhile, Didi and Betty work on mailouts in support of the town's mayoral candidate -- Sheila Swann.

Lil tries emulating her prim and proper twin cousins from England, while Phil works to persuade her to stay messy like him. Also, Angelica pretends that she's American royalty.

Dil's first Christmas finds Santa Claus driven to quit the toy-giving business by Angelica, who's unhappy about her gift: a "dumb" reindeer doll. Elsewhere, the grown-ups get snowed in at a re-creation of a pioneer cabin designed by Stu.

Didi wanted Stu to clean up the living room for Boris & Minka's visit, which includes putting the toys away. Sarcastically, Stu says that he would put the toys, and the babies, into the crawlspace. Angelica interprets this by banishing the Rugrats to the crawl space, where they could play there, while Angelica has the living room all to herself, to the displeasure of Susie. Meanwhile, Stu invents an automatic plan

The families go on a resort vacation, but are unable to relax when they're forced to share one room. Meanwhile, the babies look for treasure.

Tommy and the gang become anxious during an outing to Krudnik's department store for bargain baby clothing.

Angelica orders a timid playmate to act as her errand boy.

Angelica convinces the babies that the parents are looking for the fountain of youth.