In the third part of This Is America, Charlie Brown it starts out with Sally giving a report about for hundreds of years man dreamed of flight and then gives examples. In the outskirts of Kitty Hawk, North Carolina we find Charlie Brown and Linus on a horse and buggy that is going fast. It is driven by Snoopy. They are at Kitty Hawk, North Carolina in 1903 to visit Linus' cousin Dolly for Christmas. The Next morning Dolly shows Charlie Brown and Linus a small diary of what the Wright Brothers have done. Then they take their bikes to see the Wright Brothers flight.

The fourth part of This Is America, Charlie Brown starts out with Charlie Brown calling Linus about how his science fair project is doing. Linus is building a model of a spaceship for the contest. The night before the contest Linus dreams that he, Charlie Brown, Lucy, Peppermint Patty, and the rest of the Peanuts gang are in space. They are in a space station for 90 days. Jason Welker of the Television news network is there to talk to them on TV.

In the fifth part of This Is America Charlie Brown, Charlie Brown reads school report to his class about the building of the Transcontinental Railroad. He talks about two railroad companies the Central Pacific and the Union Pacific. Charlie Brown says that workers were needed so youngsters were employed. The two railroad companies had to lay down 10,000 miles of track. The Central Pacific stars out slow because they have the cross the Sierra Nevada mountains. Snoopy's brother Spike appears in this episode and gets a job in one of the towns that was built around the railroad. He is a harmonica player, but he is kicked out. Finally, the two companies are getting closer to the end. The last spike has to be put in. The Governor of California misses so Snoopy drives in the last spike.

In the sixth part of This Is America Charlie Brown, Sally does a school report on the famous inventors of America. She and her assistant Snoopy give examples of people and their inventions. She explains the invention while Snoopy uses it. Inventions include the paper bag, toothpick, roller skates, the first pizzeria, basketball, and sneakers.

The seventh part of This Is America Charlie Brown starts out with Charlie Brown, Linus, and the rest of the gang in Washington DC. They first See the Washington monument. Then thy see the White House, and the Lincoln Memorial. They then arrive at the Smithsonian Air and Space Museum. They see the Wright brothers plane, World War II planes, and Snoopy even sees the red barons plane. They also see the Spirit of St Louis and a space capsule. They are then off to the Smithsonian Natural History Museum, and then the Smithsonian American History Museum.

The final part of the mini series starts out with Charlie Brown trying to convince Schroeder to let Snoopy in the band for the class project. Schroeder said he is in if he does not go crazy. Schroeder and his band are practicing when Lucy says that they should combine their projects. Her project is on American people. He does not like the idea of combing the projects, but the teacher does.