A year ago, Naomi made a promise that she would not take another case until she finds the younger sister who has been missing for years. The search takes her to Portland, Oregon, where scores of homeless children wander the streets like ghosts. Naomi is unable to resist the pull of children in need - and the fear she sees in the eyes of a twelve-year old girl named Celia. As danger creeps closer, Naomi and Celia find echoes of themselves in one another, forcing them each to consider the question: can you still be lost even when you've been found? But will they find the answer too late?