As the two-part season finale of The 100 approaches, you’re probably feeling a mix of emotions.

Excited, eager, nervous, terrified.

And who could blame you? All our favorite characters are headed off to war, and some of them are bound to get themselves caught in the crossfire (check out the trailer below).

If Finn’s death earlier in the season taught us one thing, it’s that literally no one is safe on this show. Be afraid.

With Bellamy trapped inside Mount Weather, Clarke and Lexa leading the Grounder army, and Octavia fighting alongside her mentor, Indra, I’d have to say these four are in the most immediate danger. War is no joke, and even if the Mountain Men’s prospects look bleak right now, that can change with the drop of a hat.

Behind the Scenes of “Blood Must Have Blood”

Showrunner Jason Rothenberg told E! News: “We’re the outsiders trying to get in to save their people on the side. It’s a very different kind of battle; it’s really much more complicated. It’s much more complicated to break in than it is to man the wall.”

Sounds like breaking down the door might not be as easy as they all think.

Sneak Peek: “Blood Must Have Blood”

The two-part finale is titled “Blood Must Have Blood Part 1 and 2.” Will Mount Weather pay for all the blood they’ve spilled, or will someone else be chosen to pay the price?

Sound off in comments below with your guesses!

The 100 airs at 9/8c on The CW.