Zarm, a spirit of war and conquest that was once the spirit of Earth tempts the planeteers with power and pits them against each other. Matee's "heart" power breaks him free of Zarm's control, allowing him to eventually save the planeteer's from Zarm's corruption. The planeteers realize that an iron fish ethos will do more harm than good, even if done with good intentions and summon Captain Planet to send Zarm back to his world.
In 1955, Doc can't think of a way to generate the 1.21 gigawatts needed to power the DeLorean so Marty can go back to the future. Because Marty has information about the future, they are able to concoct a plan to channel the energy from a lightning bolt into the flux capacitor.
The speakers describe a luxurious party during the Gilded Age, and how it was criticized due to the party's great expenses during a time of struggle for many working-class families. The narrator mentions how the major economic growth led to a large wealth gap between the rich and poor, and how the wealthy minority essentially gained control of America.