In a world decimated by nuclear fallout, a community's survival hinges on their wind-powered radiation shield. Cesium storm clouds gather on the horizon just as the wind farm breaks down. With only days to black start the system, Natasha, the hardened young engineer with the fate of their world on her shoulders, must learn to work with her tech-genius brother, Lysander. Although she rages against his happy-go-lucky outlook, only together can the two bring the power back and save their settlement.