Assuming you watch the first two thirds of this story that is sometimes mistaken for a trilogy, you will notice that it has been divided a little differently for this presentation. We find that Shelob (who you will be introduced has move to this second of the story as the Peter Jackson's adaptation of the works of J.R.R is presented is actually divided better here. Also Sam does not get the opportunity to try out his ring skills.
Mean while back at the ranch. Oops Minas Tirith prepares for a major battle. Aragorn sees dead people. We see a flaming Denethor (John Noble). If they survive the battle then they must prepare to confront Sauron of Mordor to distract him from his real threat (Frodo).
The absents of the scouring of the Shire we still get the feel if not an added extra as the four Hobbits having been places and seeing sights that are unfathomable to the other residents of the Shire look knowingly at each other.
Comments on the four hours and ten minute version suggests that the is quit a bit more footage that is not seen here and may never be. This includes information on many of the characters after the final confrontation.
Do not miss all the great song that gives another dimension to this grate presentation.