When Stephanie's mom leaves her in charge of their house for a few days, it's finally Stephanie's chance to prove she can handle responsibility alone. But after fending off Andrea's party plans, a Home Alone-style break-in (by the hapless Snivel, trying to retrieve incriminating evidence of the Mayor's latest scheme), and finally the entire house disappearing ("Uh, think Stephanie's Mom will notice?"), Stephanie comes to appreciate that responsibility is a lot harder than it looks.