Chuckie has a difficult decision to make: spend the rest of his life in diapers, or learn to use the potty. A nightmare has his friends forcing him on the toilet, which inspires him to use the potty for the first time. ---- When Phil and Lil have a huge fight, Betty decides to separate them for a while and takes Lil to play with Tommy and Chuckie. Lil soon misses her brother and the three babies decide to head next door, not realizing Phil is doing the same thing.
After wandering away from their fathers, Tommy and Chuckie unwittingly end up playing around in a closed toy store, which they never want to leave. However, they become terrified of an electronic gorilla toy named Thorg who wants eat and try to get a giant Reptar toy to help them. ---- Intrigued by Grandpa's pirate story, the Rugrats play "pirates" themselves.
While Didi is running some errands, she leaves Tommy at a maximum-security daycare center. Desperate for freedom, Tommy contemplates escaping with help from the other babies there. ---- Tommy is due to get a booster shot but soon worries about the shot after hearing Chuckie's horror story about his, but in the end it is not as bad as he thought it was.
Tommy and Chuckie match wits with Prudence, a.k.a. "The Junk Food Kid", the local playground bully at a Wild-West-themed playground. ---- Chuckie and Tommy decide to go through a mirror to see "Mirrorland" where "everything is the same, only different", with Didi and Grandpa's examination of various antiques making them believe they really did cross over.
Angelica falls in love with Dean, a biker-type kid who is described as "a 4-year-old's dream on a 5-year-old's bike". However, her heart is broken when he pledges his love to someone else: his mother. ---- Stu and Drew intend to take the Rugrats out for ice cream, but when they pass "Fun Land", a miniature golf course, they decide to stop to play a round of golf. While there, the Rugrats try to reach "Ice Cream Mountain", a gargantuan sundae (not knowing it is made of plastic).
Stu falls off the roof while attempting to install his new "Quack-O-Matic" weather vane. Suffering from a strange amnesia, Stu reverts to his childhood (as "Stuie") and becomes friends with the Rugrats. The babies have fun with Stuie for a while, but Tommy soon starts to miss his father which leads to him returning to his original self. ---- To make room for some new stuff (including Stu's new stereo), the Pickles sell their unwanted goods at their garage sale. However, thanks to the babies, the
While working on the anti-gravity playpen (his latest invention), Stu blacks out the neighborhood. Being afraid of the dark and wondering where the light is hiding, the Rugrats look for the light in the most logical place: the fridge. ---- After ruining Grandpa's chess game (being played by mail), Didi takes Tommy and Chuckie on her errands. While at the bank, Tommy and Chuckie wander around, looking for the "M&M machine" (the automated teller machine (ATM)), while inadvertently foiling a bank r
The Pickles family reunion is held in Iowa, hosted by Hugh Pickles and his wife, Dotti. While there, Angelica tells Tommy and the other babies that reunions are swap meets for babies, with the babies being swapped to different parents. ---- Grandpa's fun night with Tommy and Chuckie is interrupted when, after 40 years, his long-lost girlfriend named Morgana pays a visit to him. Lou, not wanting Morgana to know that he is a grandfather, rushes Tommy and Chuckie to bed early. Naturally, the boys t
Grandpa takes the Rugrats to the natural history museum. Later, the Rugrats dismantle a dinosaur while looking for a bone for Spike. Meanwhile, Grandpa locks horns with the strict security chief Sally Payson, while rushing around the museum looking for the Rugrats. ---- The Pickles and the Finsters go to the beach. Chuckie has a personal mission, which is to set free the "Sea Moneys" (Sea Monkeys) that his dad gave him.
After finding a lizard, which the Rugrats think is "Reptar's baby", they try to present it to him at "Reptar on Ice", an "Ice Capades"-type show. The problem is that the actor playing Reptar is afraid of lizards—and is not too fond of children, either. ---- After a game of charades between the Pickles and the DeVilles ends up causing a huge argument, the families abruptly end their friendship and wage war, upsetting the babies. While Chas is stuck in the middle, having to return everything the n
Chuckie thinks that he is really a superhero after seeing a taping of "Captain Blasto" (voiced by Adam West). ---- The babies try to protect Spike from the "dog broomer" (a dog groomer).
Aunt Miriam (Andrea Martin) is mistaken for an evil alien by Tommy and Chuckie when she comes to visit. ---- After Chuckie swallows a watermelon seed, the babies are forced to shrink down with a laser beam and enter his body to retrieve it after Angelica tells them it will grow inside his stomach and explode. However, it turns out that the entire journey was a dream, and that the babies never shrunk down.
After a traumatic Santa visit in the mall, the babies' parents rent a cabin in the mountains in which to spend Christmas. Meanwhile, Chuckie is scared of Santa and wants to stop him from coming, while Angelica tries to right a wrong involving Phil and Lil's toys and presents.
Dr. Lipschitz (Tony Jay), the famous child psychologist whose advice Didi always follows, visits the Pickles but is not prepared for an encounter with the babies. ---- Tommy and Chuckie imagine their lives as adults, but realize later that it's better to be young.
Tommy dreams that he and the other Rugrats are captured by aliens that resemble his parents, pet dog and his grandfather. Angelica steals a planet-atomizing remote from Stuvon (Stu as an alien) and escapes with help from a talking fish. Meanwhile, the babies wander into the ship's control room and play with the controls, thinking that they are toys. ---- Grandpa uses his skills from working as a detective in the 1930's to look for Tommy after he winds up at the mansion home of two eccentric sist
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.
When Tommy's favorite stuffed lion gets filthy, Didi confiscates it for a cleaning. Tommy is greatly upset by this, thinking he will never see the stuffed animal again, and Angelica helps Tommy "go bad" to get what he wants. ---- Angelica experiments with magic and Lil goes missing in the process. This leads to the belief that Angelica made Lil disappear.
New neighbors move in across the street from the Pickles, where Tommy helps the youngest member of the family, Susie (Cree Summer), find her new room. ---- Stu buys a self-assembly theme-park toy for Tommy but finds it too complicated to build. Meanwhile, the babies quickly find something even more fun: the box that the toy came in.
Tommy and Chuckie are afraid of being sucked down the drain, so they clog it in various ways to avoid having to take a bath. ---- The gang attends Didi's brother's wedding, where Tommy and Chuckie seek cake.
Tommy and Chuckie accidentally lose Angelica's favorite doll, Cynthia, while Stu and Drew wash Drew's boat. While Angelica holds a funeral for Cynthia, Spike manages to find the doll. ---- Chuckie has an imaginary friend named Barney.
The babies mistake a garbage truck for a monster that eats trash. ---- After watching a TV show about a superhero dog named "Oodles the Talking Poodle" the babies wish Spike can talk, and be a superhero as well. They get their wish when Angelica fools them with her toy executive telephone into thinking Spike can talk – instead being a scheme created by her to obtain the cookie jar. But in the end, Spike becomes the hero the babies always wished him up to be.
Chuckie is afraid to go down the playground slide after accidentally getting on a giant slide at a pizza place. After Angelica intimidates him, the babies consult Susie, and she trains Chuckie to be "the bestest slider in the whole wide park". ---- The babies mistake a swimming pool for a giant potty, and set out to try to find the flusher. Meanwhile, Stu is struggling to overcome his fear of diving.
Grandpa competes in a bowling tournament, where Tommy and the others inadvertently help Grandpa win by exposing his bowling rival (Tom Bosley) as a cheater. ---- Angelica runs away from home and hides in the Pickles' backyard after being sent to her room for ruining her father's office. She later realizes her mistake when it starts raining and she has to live in Spike's doghouse, and thinks her father is happy that she ran away when in reality he is not.
Didi appears on a TV game show. Guest stars: Alex Trebek and Charles Nelson Reilly ---- Tommy and Angelica are left to stay with Boris and Minka for the weekend, where they discover toys (and some family history) in their attic.
After Angelica saves Chuckie's life from nearly being hit by a gang of big-wheelers, she takes advantage of the debt he owes to her by making him become her personal slave. Until she gets a taste of her own medicine at the end. ---- When Susie attempts to defend the babies from Angelica, the two compete to see who is the best.
Angelica schemes to pull out and steal Chuckie's teeth to get money from the tooth fairy. ---- The grown-ups throw a costume party, and the babies think that everybody's costumes are real, including Didi's cousin Bucky who's dressed as a baby, after they rub a magic lamp.
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.