Without warning on a sunny June afternoon, all life on Earth vanishes. Reeling and alone in the aftermath, Alan and his son Todd scrounge through the ruins of civilization to survive. Finding food and water is easy. Electric power is harder. But Alan has his own search, one he tries to hide from his son: after a lifelong struggle with depression, his scarcest resource now is a reason to keep living. Through wildfires and tornadoes, as the deadly cold of a Minnesota winter draws closer, the two try to understand. Why did this happen? Why they were spared? They don't realize that behind the empty sky, the entity that did this still watches. Or that its plans have only begun.