The term "Iaidub" or "Isaidub" seems to refer to a context related to dubbed versions of movies and TV shows, possibly specific to a region or language. The practice of dubbing allows movies to reach a wider audience by providing dialogue in a viewer's native language. The Twilight Saga, including Breaking Dawn, has been dubbed into numerous languages.
The plot thickens as Jacob Black (Taylor Lautner) returns from a trip, revealing he has been watching over the Cullens. He learns about Bella's pregnancy and develops feelings for her. However, his presence causes tension due to an ancient law that prohibits vampires from having children. twilight saga breaking dawn isaidub new