A young witch and her grandmother work together to foil the plans of a wicked warlock's son before he can use powerful spells to create chaos in the world.

The lovable bat Bartok (Hank Azaria) goes on his own adventure and meets a pink snake, a dapper bear, Prince Ivan Romanov (Phillip Van Dyke), and evil witch Baba Yaga (Andrea Martin) trying to rule all of Russia.

When a young girl living with her secret witch mother learns she too is a witch, she must help her witch grandmother save Halloweentown from evil forces.