Credit: Timothy Kuratek/CBS

There are about a zillion and one new twists that will be taking place on Survivor: Blood vs. Water (and you can see them all outlined right here). The first one of those twists happens right out of the gate and is something called Day Zero, in which the night before the game officially begins, the 10 pairs of former Survivor contestants and their loved ones will be dropped in 10 different locations to spend the night by themselves.

So why did they do it, adding an extra half day onto the usual 39 day adventure? In the on-location video interview below, host Jeff Probst reveals the genesis of the idea. “Day Zero was Mark Burnett’s idea,” explains Probst. “And how it came was we pitched Mark and said we would like to use Redemption Island. We’d like to introduce Redemption Island right out of the gate by voting two people out of the game and sending them to Redemption, and Mark said ‘It just feels really cruel.’ Yes, Mark Burnett said that.” Probst then goes on to explain how Burnett’s solution led to the creation of the brand new opening and how it will ultimately impact the game

Probst also discusses why they went with a returning players and their loved ones theme and why they ultimately chose to split them onto two different tribes, turning — in the case of Aras and Vytas — brother against brother. Just click on the video player below to get all the behind-the-scenes intel you need to get ready for the Survivor: Blood vs. Water premiere on Sept. 18.