Five years ago a flood destroyed Callie Troyers home at a Pennsylvania orphanage and her memory of the man she loved. She built a new life in eastern Ohio, assisting with the medical challenges of an eighteenth-century mission settlement of Christian Indians. But the sudden arrival of a mysterious man from Philadelphia-a man who claims to have know her before the flood-makes her question who she really is. Joshua Johnston believes that if love comes easily, it is not worth having. He wants Callie at his side as his wife, like she had promised before the flood. Is he up to the challenge of helping Callie discover who she is tomorrow is more important than who she was yesterday?