The Planeteers have three days to prove that Looten Plunder is cutting down old growth forests. The Planeteers call Captain Planet for Wheeler, who has fallen into a river. Later the Planeteers lose the battle with Looten Plunder.
After saving a rich man's life in a boat storm, Senior Cisneros persuades the Planeteers to a stay at his luxurious hotel. Ma-Ti gets mistaken for a local riffraff by the hotel's police. So Ma-Ti leaves the others and visits the poor community.
The Planeteers are trapped in a terrible blizzard up on Mount Everest. Their guide a snow leopard named 'Heather' leads them into a cavern hat turns out to be a courtroom. The Planeteers are being prosecuted as criminals.
The Planeteers are off to meet Milton who shows them all his work in preserving the endangered Mississippi River. Wheeler and Ma-ti don't want a guided tour. They want to experience the Mississippi like Huck Finn and Tom Sawyer.