Glomer fools around and turns Henry into a statue of Julius Caesar, which is sent from Chicago to Paris. Problems worsen when the Louvre's curator declares him a forgery, and Punky must save Henry before he is smashed to pieces
Punky and Allen have been protesting urban sprawl, and wants to see a nicer time before urbanization, so Glomer takes them to Chicago of 1803. There a man named Pierre LePelt is campaigning to stop a much smaller Chicago from expanding, earning the kids' admiration. Little does Punky realize Pierre LePelt is actually a poacher whose campaign is actually to continue hunting furs and pelts of the dwindling animal population.
Punky's aunt Rose and uncle Roy invite her to the Chester Henderson mansion under the pretense that they have found her mother. What Punky doesn't know (until Glomer tells her) is that she is dressed like Henderson's granddaughter Debra so Rose and Roy can use her to embezzle Debra's $50 million inheritance.
At summer camp, an Olympics competition is staged between camps Towering Pines (where Margaux is staying) and Tumbleweeds (Punky's camp). Punky single-handedly wins two events but Margaux accuses her of using Glomer as an assist. Glomer offers to stay with Margaux to help Punky save face, but when ensuing events go wrong for Camp Tumbleweed, Punky suspects Glomer of being a traitor.
Every little girl in the neighborhood is entering their mom in a mother-daughter contest...everyone except motherless Punky, that is. Glomer creates a mother for her, but Punky becomes brusque about it, feeling that she and Henry get along just fine. Besides, the glomley-created mother has uncontrolled glomley powers.