This book, the “Heart of Savior”, will highlight the admirable and heroism of Samdech Bun Rany Hun Sen, who sacrificed her youth, family and education in the struggle for national liberation during the 1970s, and her leadership as the first lady of Cambodia from 1980s to 1990s and from the 1998s to the present (2020). This book is authored not to glorify Samdech Kittipritha Bandit Bun Rany, but to preserve the precious achievement that she has done to save the victims from incidents for the sake of history for nation and the world.