The Peanuts gang tells the story of the 1620 Mayflower voyage from England to the new world detailing the hardships they faced, how the Natives helped them survive, and ending the following autumn in a feast of Thanksgiving.
Charlie Brown, Linus, Peppermint Patty, Marcie, and Linus's cousin Dolly witness the Wright Brothers' first flight. Snoopy and Woodstock demonstrates the principles of flight.
Charlie Brown discusses how the Union Pacific and Central Pacific railroads were built until they eventually linked to create the transcontinental railroad.
Each member of the Peanuts gang reports on various American inventions. Linus discusses Alexander Graham Bell while Peppermint Patty and Marcie talk about Thomas Edison, and Charlie Brown writes a report on the invention of the automobile.
Viewers experience meeting U.S. presidents as seen through the eyes of the Peanuts gang. Charlie Brown and Linus visit with Abraham Lincoln. The gang also meets Theodore and Franklin D. Roosevelt.