Kaliya, Serpent King

After Kaliya, king of the ancient serpent people, crosses the gods, he is banished and takes his serpentine family to the pristine Yamuna River, which flows by young Krishna's village of Vrindavan. There, the serpent king's venom poisons the river, destroying the environment and threatening the lives of the villagers — all of which Krishna, although only a child, has sworn to protect.