Fans have theorized the storyline for Season 7 and what the theme could be for the next season.
it will lead to the future of Fortnite. Reddit user Spaghestis has thought of a theory as to what the storyline is and how it links to previous season. He has also predicted what the Snowfall skin will be. You can read the full theory below:
This is a culmination of several other theories, which I put together and tweaked to get the full story. Lord it is:
Long ago, there were 5 different kingdoms, each master of an element. They lived in peace, but all changed when the fire kingdom attacked. The King of the kingdom, under the command of his king, swept across the different kingdoms and defeated them until the only one left was the ice kingdom. Note that during this war, a barbarian mystery disappeared mysteriously. We know that this village was actually transported from the past when the rifts connected Space-time at the beginning of S5. This village contains the Viking Skins as well as Valkyrie and Ragnarok
The fire kingdom was winning, so the Ice King led and all out assault. They were able to capture the Fire King and chain him up in the dungeons of Polar Peak, but the Ice King knew he would escape, so he sacrificed himself and his kingdom, covering everything in a deep freeze, permanently freezing everyone in it forever. This cold was too strong for the fire, and it kept him trapped.
Fast forward to the present. The war is long forgotten, only seen as a myth. However, there was a frozen wasteland, only for the toughest to survive. One of these people is Sgt. Winter, a brilliant mechanic. He was able to invent the AIM Robots and Biplanes. While exploring, he found the Infinity Blade, which he would use as another source of unlimited energy (he uses the sword in the S7 trailer). When the Kevin events occur on the main island, Sgt. Winter senses it and realizes its more powerful energy which can be used to help his people. So, using his tech, he literally breaks off some of his land and sails it to the BR island. He then uses his biplanes and his army of Slushie Soldiers to try and invade it. But as we know, the BR island has seen some stuff, and they're able to put up a fight. Sgt. Winter's army, however, are still able to establish "expedition outposts."
However, Sgt. Winters moving the land had unexpected consequences. The move to a temperate island increased the surrounding temperature of Polar Peak, slowly reversing the deep freeze into effect by the Ice King. While the difference is not too drastic, its still enough for the Fire King to awake and start using its powers to escape its icy price. This is why Polar Peak is slowly thawing out. The Ice King awakes too and is surprised, because if he awoke from his frozen slumber he knows the Fire King is returning (hence the name of this week's secret loading screen and its description)