In the chilling aftermath of 'N-Day,' Major Susan Rivera finds herself trapped in a nuclear missile silo, grappling with the unthinkable: she has launched eleven ICBMs. But one, 'Bird Eight,' remains. As the world outside descends into chaos and a direct hit threatens their bunker, Susan must confront not only a systems malfunction but also the spiraling sanity of her subordinate, Jacobs, and the unyielding procedures of Sergeant Timmons. Can she escape the dying world above and the terror within, or will the 'End of Everything' claim her too?

The year is 20XX. For decades, humanity has lived under the shadow of Kaiju, colossal beasts born from the atomic age. While some, like Godzilla, were once protectors, a catastrophic event has ignited a war of unparalleled scale. The world’s governments, desperate to reclaim their planet, have launched a devastating attack on Monster Island. But the monsters are not destroyed—they are enraged. Now, humanity faces the ultimate reckoning as the Kaiju declare war. Can two young pilots, Mako Moori and Riley Becket, in their powerful mechs, Kiryu and M.O.G.U.E.R.A., defend what little remains, or will the Earth become a monster's battleground?