After unearthing a gem that controls an evil monster looking to destroy the Universe, a young girl and her brother use it to make him do their bidding.After unearthing a gem that controls an evil monster looking to destroy the Universe, a young girl and her brother use it to make him do their bidding.After unearthing a gem that controls an evil monster looking to destroy the Universe, a young girl and her brother use it to make him do their bidding.