Over the last century at least four thousand four hundred people who were overlooked, undervalued, or otherwise marginalized vanished without a trace off the face of the planet. Last night, inexplicably, they were all returned in an instant to Detroit having not aged a day and with no memory of what happened to them. As the government races to understand the phenomenon, analyze the potential threat, and contain the story, Jharrel , an empathetic social worker, and Keisha, a hardened community corrections officer, are among the civil servants called upon to deal with the uncanny refugees.