Second installment of the Hobbit brings back an old favourite Legolas with his father Thranduil, ruler of Silvan Elves in Mirkwood. But how about Sauron's scenes, two other wizards of Istari and Gandalf's personal stories? Here are five possible storylines you should look after on the third installment.

Istari or the Wise Ones

According to J.R.R. Tolkien, the Wizards of Middle-earth are called Istari or Wise Ones, possessing much greater physical and mental power than regular humans. Gandalf and Saruman predominated the Lord of the Rings movies while Radagast finally appeared in the first movie of the Hobbit.

Did you know that there are five Wise Ones assisting people in Middle-earth the terrorism of Sauron?

1. Saruman the White: Man of Skill

2. Gandalf the Grey: Elf of the Staff

3. Radagast the Brown: Tender of Beasts

4. Alatar and Pallando the Blue Wizards with sea-blue coloured robes

Based on the storyline, both Alatar and Pallando weren't featured since they journeyed far into the east after arriving in Middle-earth. Should they have a back story on the third film?

Sauron the Necromancer

In the LOTR trilogy, we've seen Sauron live as 'the Eye' that oversees an army of evil creatures and constantly seeking his mouth-watering ring. Sauron also appeared in the film with a preview on how he looks, how created the ring and he was defeated.

In the first film of the Hobbit, he appeared as the Necromancer, taking the stronghold of Dol Guldur, the Hill of Sorcery in southern Mirkwood, disguised as a dark sorcerer that elves didn't realise was actually Sauron himself.

Clips from the second film of the Hobbit previewed Gandalf exploring the stronghold even warned by Radagast which can be assumed by a big confrontation between him and Sauron. But no one knows how Sauron looked during the First Age and how did he convinced Saruman to join to his side which is a very important aspect for the five Wise Ones.

Gandalf's Background Story

Gandalf is also a favourite but how did Bilbo come to know the Grey Wizard all this time? Is there any back story secretly hidden to appear in the third instalment?

As of now, the connection of Gandalf and Galadriel begins to show up in the films of the Hobbit series and may give implication of what happened to the White Council during the Lord of the Rings.

More Elven Lore

Three rings were given to the elves which were also tempted to be controlled by Sauron eons ago. Elrond and Galadriel appeared in the LOTR films with longer scenes but now in the Hobbit series, Legolas' father, Thranduil will finally make an appearance.

According to literature, after the death of dragon Smaug, Thranduil along with the people of Lake-town demanded a share of the treasure of Erebor and war with the dwarves was averted by the arrival of a goblin-warg army. We wanted to see more about the progress of Legolas' home kingdom and reasons why it survived Sauron's army in the Return of the King.

The Ring of Power

We know that his ring controls the Rings of Power and bent the will of nine lords of Men, enslaving and turning them to Nazgul. The one ring is only something that can be destroyed at Mount Doom but no scenes in the film displayed what kind of magic made it so powerful to enslave lords.

Based on literature, Sauron assumed a beautiful person named Annatar or Lord of Gifts and befriended the Elven-smiths to learn arts and magic. Some elves including Lady Galadriel didn't trust Annatar but Sauron succeeded on his plans connecting with the elves.

In addition to how he managed to achieve the powers of his ring, Sauron's background details such as where he came or how he was made still remain to figure of deity-like image.

It is expected that the third instalment if final on the Hobbit series will connect everything that are missing in the Lord of the Rings trilogy, the same thing almost quite with the Star Wars saga.