After mysterious explosives strike an unknown, unnamed city, people are killed, structures are disseminated, and the environment is contaminated. The only survivors are a woman, Rosa, and her son, Rob.
Rosa's twin daughters are struck by debris while asleep and die. She is so agonizingly distraught that she wraps the bodies in white sheets and puts them in a pull cart under the pretense that they are asleep and will awake at some point to continue their lives. She tries to convince Rob, who suffers from trauma and cannot make sense of anything. His only objective is to follow his mother and stay by her side.
Together they hike across the burnt landscape, supporting and comforting each other.
Rosa's world collapses when Rob suddenly dies in her arms of a mysterious illness.