The Planeteers are called by Gaia to stop a new villain, Sly Sludge from polluting the Earth with another one of his trash dumping schemes. When the Planeteers confront Sludge, he tells them that he no longer dumps trash and has found the answer to the problem of waste management forever. He "demonstrates" by having a machine that shoots intense beams of light supposedly shrink the trash, but unbeknownst to the planeteers, it's all smoke and mirrors.
It is discovered that Sly Sludge has been using the active volcano of an Island inhabited by people as a natural trash incinerator. The volcano begins erupting and trash that the volcano didn't erupted with it, scattering. Captain Planet tries to enter the volcano, but the fumes from the trash made the air inside the volcano too polluted for him to tolerate.
We learn how important recycling is and why you should not throw trash on the streets and how it could lead to more people polluting the city. We also see how one trash bag can lead to everyone throwing their trash on the stretes.
Kwame is appalled at how the small town villagers who have had trash dumped on them by Sly Sludge's operations have started polluting their own town. It demonstrates cowardice, lack of vision, and apathy of the townspeople.