A comet hurtles towards earth, crashing into a deep forest and creating a devastating fire. The Planeteers exstinguish the danger with the aid of Captain Planet, and then they investigate what caused such a thing. Stumbling across the asteroid, the Planeteers are shocked to discover it is in fact, a spaceship, and that it carries an occupant, Zarm. This "peaceful alien" has traveled from his home planet to provide the Planeteers with powers with which they could easily save the planet without constantly depending on Captain Planet to do it for them. Taking the form of Iron Gauntlets, these powers increase the Planeteer's original capabilities a hundred fold. But with such mighty gifts, there must always come a price, the heroes of earth soon become corrupted by this power, and Zarm, (in reality, the exiled predecessor to Gaia), takes advantage of their new-found lust for glory. He tells them to destroy a nuclear missle base, which will undoubtly lead to disaster. He also captures Captain Planet. The only people who can stop Zarm now are Mati, (the only Planeteer to refuse Zarm's offer), and Zarm's succesor Gaia, but is it too late for the Planeteers, and Captain Planet?
Elenco: Frank Welker , Joey Dedio , LeVar Burton , Whoopi Goldberg , Janice Kawaye , Kath Soucie , Scott Menville , Buster Jones , Clyde Kusatsu , David Warner , Dean Stockwell , Edgar Gilbert , George Hearn , James Coburn , Jim Cummings , Lewis Arquette , Margot Kidder , Martin Sheen , Tim Curry , Whoopi Goldberg .