Time travelers from the future journey to 1776 to seek advice from the founding fathers, but a malfunction sends them to 1976 instead. Believing they're still in 1776, they attempt to study this "utopian" society, surrounded by 1970s humor, props, and stars.
The Spirit of '76
Three time travelers are dispatched to 1776 to retrieve the U.S. Constitution, but a magnetic storm diverts their course, and they unexpectedly land in 1976, where they are misinterpreted as extraterrestrial beings.