After Didi has hided the cookie jar from Angelica, Angelica has threatened the Rugrats with her starvation if they don't find the cookies in time. Their mission becomes a prehistoric fantasy, where the Rugrats, now ""cavebabies"", find Dil, the ""Wise Cave Baby"", so he can point them in the direction of the cookie jar, or, ""Cookiesaurus"".
Cast of Rugrats
Elizabeth DailyTommy Pickles (voice)
Kath SouciePhil DeVille / Lil DeVille (voice)
Cheryl ChaseAngelica Pickles (voice)
Joe AlaskeyGrandpa Lou Pickles (voice)
Melanie ChartoffDidi Pickles (voice)
Jack RileyStu Pickles (voice)
Cree SummerSusie Carmichael (voice)
Christine CavanaughChuckie Finster (voice)
Tara StrongDil Pickles (voice)
Dionne QuanKimi Finster (voice)
Tress MacNeilleCharlotte Pickles (voice)
Nancy CartwrightChuckie Finster (voice)
Amanda BynesTaffy
Dom DeLuiseDirector (voice)
Nicole SullivanDebbie / Customer (voice)
Debbie ReynoldsLulu Pickles (voice)
Drake BellDusty (voice)