"Game of Thrones" Season 7 has already shown two episodes so far and fans are just on the edge of their seats and anticipating the next installment of their favorite HBO series.

Now, one question every "Game of Thrones" fan will be asking is "where are the so-called White Walkers that the humans have been preparing to battle?" Well, they might be closer than you think.

Where exactly are the White Walkers?

According to Popsugar, the Night's King-led White Walkers are on their way to Westeros. Clearly, since winter is already here, an invasion is inescapable.

It's only a matter of when are they really arriving?

Now, to figure this out, we must first know where they are and where exactly they're going. In a map shown on HBO's website, it is indicated that the White Walkers were in Hardhome (a small fishing village). The army has been there since the end of "GoT" Season 5.

Now, the next encounter occurs at heart tree. This is where Bran has been teaching the Three-Eyed raven. In one of his visions, Bran Stark comes face to face with the Night's King, where the latter brands his arm. In real life, this serves as a beacon, making the young Stark easier to find. It can also be recalled that the White Walkers were able to destroy the weirwood three, the Three-Eyed Raven and Hodor.

But where is the heart tree? The books say that it can be found in the Haunted Forest. In the show's season 6, the White Walkers were only seen once, walking through a snowstorm.

Fan theories are claiming now that the White Walkers are on their way to the eastern side of the Wall, as supported by The Hound's vision in the fire - he sees the place "where the Wall meets the sea," where "the dead are marching past." It's only a matter of time before they finally reach their destination.

Samwell Tarly and his important role in 'Game of Thrones' Season 7

Meanwhile, The Independent has cited Samwell Tarly's crucial part in the show. The first notable moment was on season 6 episode 10 when Sam initially entered the library of the Citadel. It can be remembered that there was a spinning sun device which appeared over him - the exact same one that forms in the show's logo in the opening credits.

Then, in the latest episode, Archmaester Marwyn (played by Jim Broadbent) talked about the significance of documenting history in books, so that its errors are not to be committed a second time. They went on to talk about having a certain style when it comes to engaging people with history, to which Sam said that maybe they could try something more poetic, maybe a Song of Ice and Fire?

This leads to the question of whether Marwyn will be able to finish documenting the chronicles - because if not, that makes Sam the author of A Song of Ice and Fire. This is Mind blowing, so now, fans are wondering is Sam is really George R.R. Martin. What do you think about this theory?

Are you excited for the White Walkers to finally reach Westeros? Catch "Game of Thrones" Season 7, every Sunday at 9:45 pm EST, only on HBO.