Verminous Skumm turns a shut down coal factory into an acid rain making station by using a special acid rain making chemical. This chemical speeds up the acid rain process. The Planeteers go to shut Skumm down, but without the help of Ma-Ti. Ma-Ti has developed a size complex, and is feeling down because he feels he is too small. When the Planeteers are trapped, Ma-Ti must find a way to get past his complex to save his friends. They use teamwork to summon Captain Planet, but Skumm still manages to get away.
