The Planeteers are saved from crashing by a solar beam, created by Dr. Pollo. He and his daughter live on an island, creating new and innovative ways to use solar power. Kwame falls in love with his daughter, while also becoming suspicious of their lab assistant, who turns out to be Leadsuit, sidekick to Duke Nukem. Nukem's plan is to turn their solar convertor box into a nuclear device, so he can feed on the nuclear energy generated by the beam that saved the Planeteers earlier. The Planeteers and Captain Planet stop Nukem in his tracks, but shocks from the nuclear energy erases Dr. Pollo's memory, prompting him to set out to rediscover his inventions.

Gi and Linka are livid when Wheeler belittles their favorite rock singer, but it looks as though Wheeler may be right after they come upon a land-ravaging, strip-mining operation run by Hoggish Greedly, but bankrolled by none other than their idol - Sky Runner! Stunned, they confront the star, who turns out to be innocent, but they still have to stop Greedly before the small mining town is destroyed.

When air pollution suddenly skyrockets in an Australian city with one of the best mass transit systems in the world, Gaia is suspicious. The Planeteers investigate and find out Looten Plunder and Argos Bleak are behind the problem. They are making it look like the transit line is haunted so that they can profit from massive freeway system and auto-related businesses. Thanks to teamwork Captain Planet and the Planeteers get things "back on track"

After watching too many B-rated cyborg and gang movies , Kwame falls asleep. Shortly after, the Planeteers are called to go on a mission, where they're sucked into a freak tornado. They are then attacked by robots and have to eject from the Geo-Cruiser, separating Kwame from the others. Kwame lands into a perfect world where trash is non-existent, and is camouflaged by garbage. Meanwhile, Blight and Skumm have taken over the world with vigilante robots and gangs, and have captured the other Planeteers. They are also turned into gang members, and threaten to reak havoc on the environment. Kwame, with the aid of a new friend, must come up with a way to convince his friends that violence is not in their hearts. Once everything is back on track, the tornado returns, and wakes Kwame from what was a nightmare. He turns on the news, only to discover that gangs and violence are not far from what happened in his dream if it continues....

Gi, while repairing the Eco-Sub, became irritated with Suchi's presence, and ignored his warning to install the new part to the sub's turbines. Now, they have no control over it's direction. This causes problems when they go after Sly Sludge, who is dumping toxic waste into an Asian sea. The waste causes mutations in the sea life, especially a squid, which grows large in size, and begins to attack people, and later a nearby city. The Planeteers must stop Sludge's illegal sea dumping, and rescue the city from the mutated creature.

The Planeteers travel back in time of pursuit of Hoogish Gredly and Sly Sludge, who intend to purchase the Grand Canyon decades before it becomes a landmark and use it as a land-fill

The Planeteers are vacationing on a cruise, where they meet Trevor, a big game hunter. Linka, totally misunderstanding Trevor's reasoning for enjoying hunting, takes an immediate disliking to him. They soon discover that Greedly is running a bogus "hunting" business, where tamed animals are being used (and slaughtered) to allow his clients to enjoy the ultimate hunting experience. The Planeteers and Captain Planet are captured, but Trevor comes to the rescue and helps turn the tables on Greedly.

Verminous Skumm brainwashes a high school into thinking that AIDS is contagious & dangerous. The Planeteers help out a star basketball player who is accused of having the disease. Captain Planet makes a speech to the crowd about AIDS awareness.

In a story laced with magic and mystery, Hoggish Greedly and Rigger head south for Mardi Gras where they disguise themselves as ancient voodoo gods and poach Louisiana black bears in the bayou.

Dr. Blight uses her latest and most devious device to zap herself into Gaia's body and literally control the world. While Gaia-Blight wreaks havoc on Earth, the real Gaia, who has been transported into Blight's body, must convince the Planeteers to help her regain her own body and put a stop to the global destruction.