‘The 100’ Season 4 Premiere Recap: The End of the World Is Coming

They didn’t survive this long just to let a little radiation take them out

The 100
The CW

(Spoiler alert: Please do not read on if you have not watched Wednesday’s Season 4 premiere episode of “The 100,” titled “Echoes”)

As they survey the damage done by the Season 3 finale of “The 100,” Clarke (Eliza Taylor) and friends are quickly faced with a pressing new problem: The end of the world.

Clarke tells Bellamy (Bob Morley) about ALIE’s revelation: That nuclear reactors are melting down and they have only six months to try and save everyone. Bellamy decides it would be a bad idea to tell everyone that right away, since they’re still all pretty messed up after the City of Light.

Of course, they do need Raven (Lindsey Morgan) on the case right away, and she wastes no time in recruiting Monty (Christopher Larkin) and Harper (Chelsey Reist) to help, even if it means interrupting the new couple mid-coitus.

Jasper (Devon Bostick) seems like a logical choice to join the brain trust as well, but turns out, he’s got a plan of his own. A suicide note left for Monty and a bullet to his own temple is set aside as he learns the truth. Suddenly, he won’t have to kill himself — the Earth is going to do it for him.

On her way out of Polis fresh off killing Pike (Michael Beach), Octavia (Marie Avgeropoulos) is stopped by the sight of an ailing Indra (Idina Porter), changing her plans once again.

As Ice Nation, led by Echo (Tasya Teles), calls for the Sky People’s heads — they’re kinda not wrong that ALIE and the City of Light wouldn’t have happened at all without them — Clarke realizes Roan (Zach McGowan) is their only hope, and with an assist from Octavia, sneaks in with Abby (Paige Turco) to try to heal the King, who’s got a bullet lodged in his chest since Season 3.

Roan is saved, but it takes Clarke telling him the full truth about the radiation and handing over the Flame in order for him to agree to recognize the Sky people as the 13th coalition and call off Echo’s bloodthirsty armies.

The Arkers are finally allowed to leave Polis and “the youth have inherited the Earth,” Kane (Henry Ian Cusick) says as he and Abby watch Clarke and Bellamy return to Arkadia to try to save everyone.

And they better hurry, if that scorcher in Egypt in the final tag is any indication of what’s coming for the East Coast of the United States.

“The 100” airs Wednesdays at 9 p.m. ET on The CW.