An adult Frank Walker and Casey Newton relate to the audience their experiences, beginning with Frank's visit to the 1964 New York World's Fair as a child. In the flashback, he meets David Nix, an official who is unimpressed with Frank's limited jet pack. Frank does draw the attention of a young girl named Athena. Seeing his potential, Athena gives Frank a pin embossed with a "T" symbol and tells him to follow her aboard the fair's "It's a Small World" attraction. Frank sneaks onto the ride, where his pin is scanned and he is transported into a futuristic cityscape known as Tomorrowland. He falls from a ledge, but straps on his jet pack and lands safely before Nix and Athena.
The narration then shifts to the present, where Casey Newton sneaks into a decommissioned NASA launch pad in Cape Canaveral, where her father Eddie is an engineer. She sabotages the machines that are dismantling the launch pad and returns home where Athena sneaks another pin that is programmed to Casey's DNA into Casey's motorcycle helmet. The next night, Casey attempts to break into the NASA compound again, but is arrested. At the police station, she sees the pin among her personal items, and discovers that upon contact, the pin instantly shows her a view of Tomorrowland that only she can see. She briefly explores the vision until the pin's battery runs out.