As a challenge to see whether the Rugrats are ""grown-up"", Angelica entices the Rugrats not to sleep during naptime, then uses various tactics to get them to fall asleep. The winner gets to play with Stu's newest invention, the ""Magical Merry Music Ball"".
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)