The CW’s iZombie may not return until April, but midseason pal The 100 is gearing up for a February Season 4 premiere, and the threat of nuclear annihilation at that. See for yourself, as our first Season 4 trailer sees Clarke and her fellow survivors scouring the cursed earth to save what remains of the planet, with some surprising twists along the way.

Ahead of a formal February 1 premiere, The CW released its first official trailer for The 100 Season 4, picking up in the aftermath of Clarke and the Grounders’ triumph over A.L.I.E. There’s still the threat of nuclear plants breaking down around the globe, as if life on the ground weren’t challenging enough already.

Thus far, relatively little is known of The 100 Season 4, other than an echo-y premiere title, and the ascension of Black Sails star Zach McGowan’s Roan to series regular. Adina Porter’s Indra and Nadia Hilker’s Luna will also return, while Chai Romruen will recur as a grounder haunted by A.L.I.E.’s control, and we’ll also meet characters from the Glowing Forest Clan, Ice Nation and Shallow Valley Clans.

We’ll learn much more on the road to February 1, but what do we make of a first full look at The 100 Season 4? Watch the highlight reel and first Season 4 teaser below.

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