Ma-ti is fooled when Looten Plunder disguises himself as a scientist, promising to clear the air all over the world, including his tribe's village in the rainforest. After Wheeler and the tribe are trapped inside one of Plunder's domes, and Ma-ti is captured after discovering Plunder's scheme, the remaining Planeteers have to find them both and bring Plunder down.

Wheeler gets a letter from his hometown in New York with some bad news his farther who he never had a close realtionship is ill so Wheeler heads back to his hometown where he bumps into his old friends including Trish who now goes by the nickname of trash who has turned to crime and her boss is nothing but Vernomous Scum

An African boy from the future uses a virtual reality game and opens a door to the past where Looten Plunder is behind gorillas being poachered. He helps the Planeteers. The Planeteers call Captain Planet when things get out of hand.

Using her latest time travel device, Dr. Blight returns from 20 years in the future back to the present to warn HERSELF that the world has become... peaceloving! In a last ditch attempt to restart the Cold War, the two Blights hijack a load of plutonium from dismantled warheads and escape back into the past to sell nuclear bombs to the highest bidder.