From the bustling streets of Saigon to the serene lakes of Hanoi, Banian Genealogy and Coutot-Roehrig embark on a journey through Vietnam in search of forgotten heirs. This travel diary reveals the human side of genealogical investigation — where archives meet emotion, and memory becomes justice. Across Southeast Asia, each trace reconnects families, revives stories, and restores the continuity of lineage beyond borders.