Captain Rainbow and his animal friends travel in the sky, have thrilling adventures and save the environment! With 16 original colour drawings. Life on Crystal lake is great fun for all until the terrible Smog Dragon appears on its shores. He poisons the air, pollutes the water and embarks on a rampage of destruction of the ancient forest. At first terrified, the Crystal Lake dwellers including Goose Steven, Dog Miranda and Trout Gordon decide to fight back. They enlist the help of their friend Rainbow Captain and his companion Big White Cloud who are also fed up with the monster's destructive presence. Together they embark on a difficult journey in search of a magic potion.