In this episode we meet Tommy, Chuckie, Phil, Lil, Angelica, Grandpa, and the rest of the gang for the first time at Tommy's birthday party. After Stu gives Tommy a flying saucer for his birthday the babies start there first adventure by flying around the house and causing all sorts of Havok.
Part 1: Stu and Didi have a 4th of July Party where Tommy loses his favorite ball. Part 2: Stu takes Tommy on a job interview, but Tommy gets loose and and destroys the kitchen.
Part 1: Tommy wants to see Reptar, but the parents took him, and the other Rugrats, to the Westside Octoplex to see The Land Without Smiles (starring the Dummi Bears) instead. The Rugrats left Dummi Bears to go look for Reptar (showing at the same theater), leaving a path of destruction behind them. Part 2: Angelica Sleeps over at Tommy's but her desire for an open window leaves Tommy Feeling Ill. This Results in some very Crazy dreams.