This book is a real-life account of a young Jewish girl hiding from the Nazis during World War II, written in diary format. The girl and her family are forced to live in a secret annex in Amsterdam for two years, during which she writes about her experiences, fears, dreams, and the onset of adolescence. The diary provides a poignant and deeply personal insight into the horrors of the Holocaust, making it a powerful testament to the human spirit.

The book is a dramatic adaptation of the original diary written by a young Jewish girl who, along with her family and others, went into hiding during the Nazi occupation of the Netherlands in World War II. Over the course of two years, she records her thoughts, feelings, and experiences in a secret annex of an Amsterdam building. The diary poignantly captures the realities of living in constant fear of discovery, while also detailing the personal growth, aspirations, and everyday life of a teenager in extraordinary circumstances. The narrative ends abruptly when the group is betrayed and sent to concentration camps, with the girl's father being the only survivor. The diary's posthumous publication offers a deeply personal insight into the horrors of the Holocaust and the indomitable spirit of its young author.