The following plot was taken from Feel free to expand it!
Since Charles(Scott Baio) is too busy to hang out with Buddy(Willie Aames) so he gets a back up Adam(Alexander Polinsky) when Walter(James Callahan)figures out that Adam reminds him of Buddy he says fix this or your fired, Adam gets a date with Rachel, but the problem is that he has to babysit a little girl named Hillary, Buddy offers to do the job for him, but when everyone leaves the diner and little Hillary is left all alone. Charles arrives and takes her back to the house but Jamie(Nicole Eggert)and Sarah(Josie Davis)all have plans and can't watch her, Charles gets ready for the prom, while he is changing Hillary takes off, they eventually find her and Adam tells Hillary's mother the truth and takes responsibility.