Dans ce premier épisode passionnant, le méchant Hoggish Greedly et son acolyte, Rigger, utilisent une plate-forme pétrolière dévastatrice pour exploiter un fieid de pétrole sous les fonds marins. Le désordre est suffisant pour réveiller Gaia, l'esprit de la Terre, de son long sommeil. Elle apprend bientôt avec horreur que les actes impitoyables de Greedly ne sont pas rares dans le monde d'aujourd'hui, la Terre souffrant chaque jour terriblement de toutes sortes de dommages environnementaux. Refusant de s'asseoir et de ne rien faire à nouveau, Gaia appelle cinq jeunes gens spéciaux des cinq coins du globe et leur fournit à chacun des anneaux qui contrôlent les quatre éléments de la Terre, ainsi que le cœur de ses habitants.

Skumm and his rat pack threaten to destroy a city with acid rain.

Greedly and Rigger strip-mine Thailand for rubies.

Skumm peddles a polluted drink that turns consumers into rodent zombies.

Captain Planet is held hostage by Nukem, Blight and MAL.

An aggressive and sneaky Earth spirit named Zarm tricks the teens into disobeying Gaia, sparking a dangerous game that threatens to lead to nuclear war.

The Planeteers fight to save the African elephants from extinction as Looten Plunder tries to corner the market in ivory.

Greedly and Rigger plot to empty the oceans of fish.

Blight gains powers from the "Tree of Life" and threatens to use her new strength to destroy the redwood forest.

Sludge solves the world's trash problem by dumping everything into a volcano, which then erupts.

A little boy helps battle a smog monster.

A dumping operation threatens an underwater city.

Plunder dams an African river, leaving the locals without the food or water the waterway provided.

Greedly creates a pollution-intensive car but his own son becomes a victim of the resulting smog and pollution.

Sludge and Blight break into government computers and transform all national parks into toxic waste dumps.

Plunder, Skumm and Greedly pollute the nation's water supply.

A depressed Kwame leaves the Planeteers when no one seems to care that Sludge is burying a small town in garbage.

Nukem decimates the ozone layer so he can feast on ultra-violet rays.

Looten Plunder provokes tribal warfare so he can sell arms to both sides.

Wheeler is stranded on an island of humanoid mice on the brink of population overload.

The teens cross paths with Cold Warrior Commander Clash, but their true opponent is Captain Pollution, a creation of Blight's.

Commander Clash joins the Planeteers to stop the eco-villains and Captain Pollution.

A disgruntled Wheeler uses a time machine to travel to the past to stop himself from becoming a Planeteer.

Wheeler's attempt to keep his former self from joining the Planeteers has grave consequences for the planet.

Blight creates a mini greenhouse effect over Hope Island, threatening Gaia's life.