On Memorial Day, a series of bomb explosions rips through major cities in the US. Sabine flees DC and begins a grueling journey on foot that brings her to an abandoned farmhouse with other refugees. For Sabine, family is a vague memory—she can't even remember her last name. But in time, she begins to recall family—a mother, a father, and a brother—and with her recovered memories comes a longing to find them. Are they alive, surviving, in hiding as she is?