Focuses on a group of toddlers, most prominently Tommy, Chuckie, Phil, Lil, and Angelica, and their day-to-day lives, usually involving common life experiences that become adventures in the babies' imaginations. Adults in the series are almost always unaware of what the children are up to; however, this only provides more room for the babies to explore and discover their surroundings.
When Grandpa Lou takes Tommy with him to the supermarket, madcap adventure follows as Tommy gets loose and goes on a quest for Reptar cereal.
After being inspired by their dads watching a football game, Tommy and the other Rugrats use the living room for a little grid-iron fun of their own... keeping Angelica from stealing their chocolate milk.
Someone broke "Mr. Fluffles" (Angelica calls it "Mr. Fluffle-Luffles"), Tommy's clown lamp, and Angelica wants to find out who. The finger-pointing, however, eventually points back to her.
Angelica brings her cat Fluffy over to the Pickles' house, where it makes a mess. When Angelica blames the cat's misdeeds on Spike, will Tommy be able to clear his dog's name?
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 Didi take Tommy and Angelica on a car trip to the Grand Canyon, but their car breaks down. While exploring the garage repair shop, the Rugrats unwittingly foil two unscrupulous mechanics who were planning to rip them off.