Stu and Chaz take Tommy and Chuckie to the Toy Palace and Tommy and Chuckie think it would be neat to live in the store and so they sneek away. Stu and Chaz, completely oblivious to what's going on, leave (with a doll and a monkey doll) Tommy and Chuckie in the store. Tommy and Chuckie explore the store with a lazy security guard watching wrestling. Tommy and Chuckie soon find out living in the toy store isn't so good when they get chased by a giant ape toy called "Thorg."
Chaz wants Chuckie to be potty trained but can't get him to go. The babies try not to let Didi and Stu make him use it. Chuckie has a dream about never learning and he uses the potty overnight.
Tommy has to go to an overprotective day-care with junior delinquent babies trying to break out. At first it seems like a challenge but then Tommy comes up with an idea to escape.
Tommy tells the babies that he's going to get his booster shot, but when Chuckie warns Tommy what it is he becomes scared and tries to avoid getting it.
Phil and Lil tell Tommy and Chuckie that there's a world behind the mirror, so Tommy and Chuckie explore it. The world is the complete opposite of their world, but when it gets too scary they decide to come back.
Angelica falls in love with a biker kid but doesn't know how to tell him, so she gives him hints throughout the whole episode. When they finally have a chance to be together, his mother comes and picks him up. After that, Angelica decides not to fall in love again - but when a cute foreign kid becomes her new neighbor, she falls in love all over again.
Stu and Drew decide to play golf on a course that's impossible to win. Angelica says that if they win they get ice cream, so in the end the Rugrats help them win and they get ice cream after all.
Stu tries to set up one of his wacky inventions on the roof and falls off, landing on his head, and starts to think he's a baby. The Rugrats take advantage of this and have fun with him but Tommy starts to miss his dad.
The Pickles throw a garage sale and Angelica tricks the babies by letting them help out and give out some stuff too. In the end when Didi and Stu come back inside, the entire house is empty and the money they earnt has to be used to replace everything.
When Stu creates a blackout, every light all over town goes out. Chuckie says that now it's dark, every scary monster will come out, but Tommy says that he knows where there's extra light: the refrigerator. The Rugrats have an adventure and by the time they get to the refrigerator, the power comes back on.
Didi needs to go to the bank to run her errands. In the meantime Tommy and Chuckie raid the bank looking for M's. Instead, they cause havoc and help the police catch two notorious criminals.
While Grandpa goes on to Chicago because he missed his train stop (likely on purpose), the Pickles stop in (fictional) Willoughby, Iowa to attend their family reunion, hosted by Hugh Pickles and his wife Dotti. Angelica tells Tommy and the other kids that reunions are swap meets for kids, with the kids being swapped. Her lie ended up backfiring on her, however, when a couple of other farming relatives, Mackie and Edie, have a kid like Angelica.
After 40 years, Grandpa's long-lost love Morgana pays a visit. Morgana broke up with Grandpa over his affair with another woman named Trixie McGee, but never knew the real story. Also, Grandpa doesn't want her to know that he's a grandfather, so he rushes Tommy and Chuckie to bed. In any case, everyone has to contend with Stu's new remote-controlled couch, which is more like a mechanical bull for two.
Tommy and the babies want to bring Spike to the museum with them, but can't. So the babies go off when Grandpa talks to the ladies to look for a present for Spike, and they get in trouble with security chief Sally Payson.
The Rugrats go to the beach and Chuckie brings the sea monkeys from his house. Chuckie and Tommy can't lift the cooler, so they wait for the cooler to be empty and then bring it back and throw it in.
Bored at home, the grown-ups decide to take the Rugrats to see "Reptar On Ice" - but when they find Reptar's baby, the Rugrats decide to be part of the act.
After Tommy, Phil and Lil's parents get in a big fight, Chuckie's dad tries to make them the best of friends again. If he fails, Tommy and Chuckie will never see Phil and Lil again!
The Rugrats go to see a live shooting of an episode of "Captain Blasto," Stu and Drew's favourite super hero. Chuckie decides that he wants to be a super hero and his first order of business is to take Angelica out!
Didi thinks that Spike needs a bath, so calls the best dog groomer. Tommy and Chuckie think the dog groomer is trying to hurt Spike, so they try to keep him from getting washed.
Aunt Miriam and Lou were not nice to each other. They always did and acted like Angelica and Tommy are today. Tommy and Chuckie go in the bathroom and find a hair dryer, a radio and a wig. They think Aunt Mirian is an alien and investigate.
Chuckie accidentally swallows a watermelon seed. The babies all pretend to go inside of him, and find the seed. Angelica wants to grow the seed so Chuckie will explode and die. Tommy stops her and they get the seed, but at the end, Spike eats the seed.
While Didi and Stu go out, the famous Dr. Lipschitz babysits Tommy and Chuckie. The babies wonder about him and accidentally reveal him for the phoney that he is.
After Angelica gets Tommy and Chuckie in trouble, they decide to be grown up. Chuckie has a dream about it, but Angelica the boss ruins that too, so Tommy and Chuckie decide that it might be better to be babies.
After Angelica finds out that Santa Claus is a fake, she decides to take Phil and Lil's presents away. Meanwhile Tommy tries to convince Chuckie that Santa Claus isn't a scary man. The adults take them all for a trip in the mountains for Christmas and that's where the Christmas spirit strikes Angelica and she decides to give Phil and Lil their presents back so she won't get coal for Christmas. Chaz decides to dress up as Santa and when Chuckie sees him he loses his fear of Santa Claus.
Angelica and the babies are kidnapped by an alien ship and find out about their parents - they're all aliens, including Grandpa! Tommy and the babies search for a way to get out and meet a dude that knows the ways out. He takes Angelica and puts her in the middle of a deserted place.
Grandpa comes out of the supermarket with Tommy and puts him in the back of a car for a moment. When he returns, the car has vanished with Tommy in it. Two women took Tommy as a son and Grandpa tries to take him back.
Angelica plays a hide-and-seek game with the babies, but it's all a plan to steal Chuckie's glasses. Chuckie tries to look for them but he can't see - so he tries to find his "eyes" but breaks Grandpa Lou's instead. In the end Angelica literally gets sick of them and Tommy gives them to Chuckie.
The adults are trying to catch a skunk. Tommy and Chuckie join the hunt and Chuckie ends up being skunked. The babies and grown-ups try everything to get rid of the smell, but the real cure is Minka's borscht.
Tommy loses his stuffed lion. It gets dirty and Didi decides to clean it. Then Tommy gets mad and decides to act mean just like Angelica, but Chuckie eventually saves him by turning Tommy good, and Didi gives Tommy his lion back.
Angelica gets a magic wand and causes havoc all around, but when she turns Lil into a butterfly she decides that all this magic stuff is getting out of hand.
New neighbors the Carmichaels come to town and the Pickles help them get settled in. Tommy meets all the kids: Alisa, Buster, Edwin and Susie Carmichael. Susie tells Tommy all about her great room, but she can't find it so they search all around Susie's new house for her brand new room.
Stu throws out the box from what they just got, and all the Rugrats imagine what they could do with the box. Racing car, astronaut, anything. So, what will they do?
Bored at home, the grown-ups decide to take the Rugrats to see "Reptar On Ice," but when they find Reptar's baby the rugrats decide to be part of the act.
Didi's half-brother Ben gets married. All Tommy and Chuckie can think about is the fact that they'll get cake after the ceremony. Things take a turn for the worst though when Elaine, Ben's bride, gets cold feet and disappears. In the end Tommy and Chuckie, on their search for the wedding cake, are the ones that find her.
While Stu and Drew are cleaning Drew's boat, Chuckie and Tommy shanghaied Cynthia so she could be captain; however, when she got lost in the sewer system, it broke Angelica's heart. She did get her back, but not without sailing miles and miles in the sewers and taking a bath in toxic waste. Meanwhile, after being chased away by Angelica, Spike hitches a ride in a garbage truck to the city dump, which doubles as a "scenic overlook."
Chuckie introduces his imaginary friend Barney (who looks just like Chuckie, according to Chuckie), to the other Rugrats, but becomes concerned when Barney "oversteps his authority." Meanwhile, Didi runs with Betty in the "Save the Grunion" 10km marathon, paying a little "price" at its end.
The babies all hear the same noise every night, every week. They find out it's a garbage truck and they try to feed stuff to him. The babies find the garage is messy so they let all the stuff out, leaving a mess of recycling.
The babies see an "Oodles the Talking Poodle" commercial with a talking dog. They think Spike will be able to talk, but he can't. Angelica puts a speaker in his collar, and sounds like Spike is talking, but he's not.
After Chuckie mistakenly goes down the "big kids' slide" at a Chuck E. Cheese-type place, he's afraid of all slides, and Angelica and Suzie bet on whether he will go down another slide.
The Pickles and De Villes go to an indoor swimming pool, and the babies, convinced that it's a giant toilet, try to flush it by jumping on the diving board. Stu must face his fear of the high dive to save the babies.
Grandpa is determined to beat Billy "Strike" Maxwell, his long-time challenger who ensures his victory by having the game rigged. The Rugrats, looking for the "chocolate chip" (championship) and the "big candy dish" (bowling trophies), inadvertently expose the fraud.
Angelica is mad at Drew for punishing her for messing up his den. Angelica is so mad that she runs away from home and goes to live in Spike's doghouse in Tommy's back yard. After figuring out that she loves her parents, she moves back in with them.
Chuckie accidentally swallows a watermelon seed. The babies all pretend to go inside of him and find the seed. Angelica wants to grow the seed so Chuckie will explode and die. Tommy stops her and they get the seed, but at the end, Spike eats it.
Didi, Stu, Drew and Charlotte go on a week-long vacation and leave Angelica and Tommy at Minka and Boris's house. Tommy and Angelica think it's boring so they look for toys, ending up finding Didi's old toys.
Susie impresses the babies when she stands up to Angelica for them, but to get back at her Angelica says that she can do anything better than Susie can. They have multiple competitions and after getting tired they decide that everyone is the best at something sometimes.
While Tommy and Angelica are hanging out at Susie's house, the three of them are watching an edutainment-video on dental hygiene. Susie explains that her parents had gotten the video because her older brother, Edwin, had recently lost one of his baby teeth and received money from the Tooth Fairy after he put the tooth under his pillow. Angelica doesn't believe the story until Edwin shows that he really did lose a tooth by smiling at her, and showing that he had lost one of his front teeth. This gives Angelica an idea.
Grandpa Lou tells the Rugrats about Aladdin and his magic lamp, so Angelica and the other Rugrats make a wish on a real lamp. When it doesn't work, Angelica falls asleep - but the babies stay awake for the grown-ups' costume party where they think that all their wishes came true. By the time they tell Angelica, the party's over and she doesn't believe the babies.
