Tad, who did a good deed at the Jumping Frog contest, makes a trip to Lake Baikal in Russian Siberia. It is the oldest deepest lake in the world. Tad locates a population of toads and frogs suffering in a polluted urban pond. The residents are controlled by an angry frog named Rasputin and his enforcers the Smoke Brothers. Tad organizes with Sasha's help an immigration to a better tributary lake along the shore of Baikal despite the attempt of Rasputin...