Two young boys while away a dreary, winter's afternoon watching the coal fire burn. To their astonishment, they suddenly hear the ghostly voice of a young girl calling them from beyond the fireplace!The boys agree to help the girl free her brothers from a wicked witch who kidnapped them two hundred years before, but first they must solve the riddle to find the witch's den...With many an adventure along the way, the boys find the witch, but will they manage to free the children, imprisoned in giant bubbles, without her catching them? Can they find the golden key, the only thing that will lock up the witch for good? And will they ever get home to their parents?Whatever happens, it won't be easy!