Four years have passed since the virus came and killed every adult in its path. Shortly after, the power went out. Food and water ran low. Fires raged across the land. Now, Anna is alone in a house hidden in the woods, taking care of her brother and keeping him safe from the outside world. But when the time comes, Anna knows they will have to leave their world behind and find another. At times radiant and tender, at others gripping and terrifying, Anna is a poignant parable about love and loneliness; about the stories we tell to sustain ourselves and the paths we will take to stay alive.