When Spike is accused by Stu of knocking things over in the Pickles' garage, the Rugrats go to investigate what really happened and clear Spike's name. Believing it to be a monster, will the babies be brave enough to discover who the real culprit is?

The Rugrats hear that Reptar is supposed to be appearing in person at the Sleazola Bros. Fair, so they go looking for him there. But Reptar turns out to be more than just a mean green monster... He's a guy named Leo who loves to eat cereal.

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."

The Rugrats act out the pirate story Grandpa told them before he fell asleep (as usual).

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.

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.

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.

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.

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.

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.

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.

Chuckie is scared to get a haircut so the rugrats try to make him get over this fear.

After Susie talks about her rough experiences at camp Angelica says that she could handle that entire camp in a day. Of course she's lying and trying to make herself look good but her wish comes true when her parents enroll her in the same camp as Susie and she realizes that it's not a piece of cake.

The babies, Angelica, and Grandpa have a campout outside. Grandpa tells the legend of the Satchmo, which leads to Chuckie using the restroom, and Tommy figuring out where Chuckie is. Angelica Scares them, Stu is scared to let them sleep outside because of a campout when he was 34. He calms himself down and sleeps with the kids.

Intrigued by the neighborhood circus show, Angelica puts on a show of her own, with the Rugrats volunteering (actually, drafted).

When Chaz wins a clearing house sweepstakes, Chaz and Chuckie are rich, and Chuckie lives the high life until Chaz blows all his fortune in a bad investment.

After having vivid dreams at night, Chuckie is having trouble distinguishing fantasy from reality. His difficulty, however, almost had disasterous results when he wanders into the next yard, where a bulldog is sitting.

When Spike suddenly runs away, Tommy is sad. So Stu and Didi try new pets. The poodle is too mean, the gerbils have ran away and Grandpa Lou squished the spider. Will Spike come back or will he never come home?

Following Angelica's story on ""The End of the World"" (which previously happened 2 years before), the Rugrats prepare for the falling sky, and its aftermath (Angelica becomes the world President and orders the Rugrats to do what she says), while Stu and Chazz brush up on their tennis.

Chuckie has a girlfriend, Megan. They like each other in an unorthodox manner -- by teasing each other.

Angelica and her parents are moving to New York, only to have their plans thwarted by Jonathan at the last minute. Tommy explains to the other Rugrats on how they met for the first time, thanks to Angelica's lies about each other.

While attending a Passover seder at Didi's parents' house, Boris and the children (and later, most of the adults), get locked in the attic because the door does not open from the inside. To pass the time, Boris tells the children the story of why Jews celebrate Passover, and how Moses saved his people from slavery.